the predecessor also had non-operated working interests in certain oil and natural gas properties . prior to the partnership 's ipo , the predecessor assigned its non-operated working interests and associated asset retirement obligations ( “ aro ” ) to an affiliated entity that was not contributed to the partnership . recent developments 2017 acquisitions in the second quarter of 2017 , we acquired mineral and royalty interests underlying 1.1 million gross acres , 6,881 net royalty acres , for an aggregate purchase price of approximately $ 16.8 million . the partnership funded these acquisitions with borrowings under its secured revolving credit facility . on october 9 , 2017 , we acquired mineral and royalty interests underlying 8,460 gross acres , 983 net royalty acres , for an aggregate purchase price of approximately $ 3.9 million in uintah county , utah . the partnership funded this acquisition with borrowings under its secured revolving credit facility . on november 8 , 2017 , we acquired mineral and royalty interests underlying 71,410 gross acres , 2,757 net royalty acres , for an aggregate purchase price of approximately $ 7.3 million in various counties in arkansas . the partnership funded this acquisition with borrowings under its secured revolving credit facility . on december 13 , 2017 , we acquired a diverse package of mineral and overriding royalty interests for an aggregate purchase price of approximately $ 1.3 million . the core positions are located in california and wyoming and the package also includes small interests located in kansas , arkansas , texas and utah . the partnership funded this acquisition with borrowings under its secured revolving credit facility . 69 commodity derivative instruments on november 14 , 2017 , we entered into an international swaps and derivatives association , inc ( “ isda ” ) master agreement ( “ master agreement ” ) with frost bank for oil and natural gas commodity derivatives for the years ended december 31 , 2018 and 2019 , effective january 1 , 2018 and 2019 , respectively , with a trade date of december 12 , 2017. business environment commodity prices and demand oil and natural gas prices have been historically volatile and may continue to be volatile in the future . in late 2014 , prices for oil and natural gas declined precipitously , and prices remained low throughout 2015 and for the majority of 2016 until rebounding in the fourth quarter of 2016. for the year ended december 31 , 2017 , wti ranged from a low of $ 42.48 per bbl on june 21 , 2017 to a high of $ 60.46 per bbl on december 29 , 2017 , and for the year ended december 31 , 2016 , wti ranged from a low of $ 26.19 per bbl on february 11 , 2016 to a high of $ 54.01 per bbl on december 28 , 2016. for the year ended december 31 , 2017 the henry hub spot market price of natural gas ranged from a low of $ 2.44 per mmbtu on february 27 , 2017 to a high of $ 3.71 per mmbtu on january 2 , 2017 , and for the year ended december 31 , 2016 , the henry hub spot market price of natural gas has ranged from a low of $ 1.49 per mmbtu on march 4 , 2016 to a high of $ 3.80 per mmbtu on december 7 , 2016. on february 26 , 2018 , the wti posted price for crude oil was $ 63.81 per bbl and the henry hub spot market price of natural gas was $ 2.60 per mmbtu . the following table , as reported by the eia , sets forth the average prices for oil and natural gas . replace_table_token_12_th source : eia . rig count drilling on our acreage is dependent upon the exploration and production companies that lease our acreage . as such , we monitor rig counts in an effort to identify existing and future leasing and drilling activity on our acreage . the baker hughes u.s. rotary rig count was 929 active rigs at december 31 , 2017 , a greater than 41 % increase from 658 active rigs at december 31 , 2016. the 658 active rig count at december 31 , 2016 declined 6 % from 698 active rigs at december 31 , 2015. in addition , according to the baker hughes u.s. rotary rig count , rig activity in the 20 states in which we own mineral and royalty interests increased 44 % from 590 active rigs at december 31 , 2016 to 847 active rigs at december 31 , 2017. the 590 active rig count at december 31 , 2016 declined 6 % from 630 active rigs at december 31 , 2015. the active rig count across our acreage at december 31 , 2017 totaled 19 rigs , a 27 % increase compared to the 15 rigs at year-end 2016. sources of our revenue our revenues and our predecessor 's revenues are derived from royalty payments we receive from our operators based on the sale of oil , natural gas and ngl production , as well as the sale of ngls that are extracted from natural gas during processing . for the period from february 8 , 2017 to december 31 , 2017 , our revenues were generated 59 % from oil sales , 28 % from natural gas sales , 11 % from ngl sales and 2 % from other sales . for the period from january 1 , 2017 to february 7 , 2017 ( the “ predecessor 2017 period ” ) , our predecessor 's revenues were generated 55 % from oil sales , 36 % from natural gas sales and 9 % from ngl sales . story_separator_special_tag the production volumes were 1,067,169 boe or 3,264 boe/d and 10,410 boe or 274 boe/d , for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period , respectively . the combined production for the year ended december 31 , 2017 was 1,077,579 boe or 2,952 boe/d , an increase of 916,836 boe or 2,512 boe/d , from 160,743 boe or 440 boe/d , for year ended december 31 , 2016. our predecessor 's volumes for the year ended december 31 , 2016 decreased by 12,326 or 34 boe/d from 173,070 or 474 boe/d for the year ended december 31 , 2015. this decrease in production for the year ended december 31 , 2016 when compared to production for the year ended december 31 , 2015 was primarily due to decreased drilling on our predecessor 's interests during the year ended december 31 , 2016 due to the industry wide steep declines in the price of oil , natural gas and ngls experienced through most of 2016. our operators received an average of $ 47.08 per bbl of oil , $ 2.74 per mcf of natural gas and $ 21.50 per bbl of ngl for the volumes sold during the period from february 8 , 2017 to december 31 , 2017. our predecessor 's operators received an average of $ 47.04 per bbl of oil , $ 3.47 per mcf of natural gas and $ 24.61 per bbl of ngl for the volumes sold during the predecessor 2017 period . for the combined year ended december 31 , 2017 , the operators received an average of $ 47.08 per bbl of oil , $ 2.74 per mcf of natural gas and $ 21.52 per bbl of ngl for the volumes sold . average prices received by the operators during the combined year ended december 31 , 2017 increased 21.7 % or $ 8.39 per bbl of oil and 24.0 % or $ 0.53 per mcf of natural gas as compared to our predecessor 's operators which received an average of $ 38.69 per bbl of oil , $ 2.21 per mcf of natural gas and $ 15.99 per bbl of ngl for the volumes sold during the year ended december 31 , 2016 these increases are consistent with prices experienced in the market , specifically when compared to the eia average price increases of 17.8 % or $ 7.66 per bbl of oil and 18.7 % or $ 0.47 per mcf of natural gas for the comparable periods . our predecessor 's operators received an average of $ 49.79 per bbl of oil , $ 2.44 per mcf of natural gas and $ 17.56 per bbl of ngl for the volumes sold during the year ended december 31 , 2015. average prices received by the predecessor 's operators during the year ended december 31 , 2016 decreased 22.2 % or $ 11.10 per bbl of oil and 9.4 % or $ 0.23 per mcf of natural gas as compared to the year ended december 31 , 2015. production and ad valorem taxes our production and ad valorem taxes for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period were $ 2.5 million and $ 0.02 million , respectively . the combined production and ad valorem taxes for the year ended december 31 , 2017 were $ 2.5 million , an increase of $ 2.2 million from $ 0.3 million for year ended december 31 , 2016. the increase in production and ad valorem taxes was attributable to the $ 247.8 million acquisition of various mineral and royalty interests from the contributing parties at the closing of our ipo , the $ 29.3 million acquisition of various mineral and royalty interests throughout the 2017 period and the relevant production and revenues from those acquired interests . for the year ended december 31 , 2016 , our predecessor 's production and ad valorem taxes decreased by $ 0.1 million , from $ 0.4 million for the year ended december 31 , 2015. the decrease in production and ad valorem taxes was attributable to a decline in oil , natural gas and natural gas liquids prices . depreciation , depletion and accretion expense our and our predecessor 's depreciation , depletion and accretion expense for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period was $ 15.5 million and $ 0.1 million , respectively , for a combined expense of $ 15.6 million for the year ended december 31 , 2017. this was an increase of $ 14.0 million from our predecessor 's depreciation , depletion and accretion expense of $ 1.6 million for the year ended december 31 , 2016. the increase in the depreciation , depletion and accretion expense was primarily attributable to the $ 247.8 million acquisition of various mineral and royalty interests from the contributing parties at the closing of our ipo , the $ 29.3 million acquisition of various mineral and royalty interests throughout the 2017 period and the relevant production from those acquired properties . 76 our predecessor 's depreciation , depletion and accretion expense decreased by $ 2.4 million for the year ended december 31 , 2016 from $ 4.0 million for the year ended december 31 , 2015. depletion is the amount of cost basis of oil and natural gas properties at the beginning of a period attributable to the volume of hydrocarbons extracted during such period , calculated on a units‑of‑production basis . estimates of proved developed producing reserves are a major component in the calculation of depletion . our and our predecessor 's average depletion rate per barrel was $ 14.43 and $ 10.31 for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period , respectively . the combined average depletion rate per barrel for the year ended december 31 , 2017

cash flows the following table presents our and our predecessor 's cash flows for the periods indicated . replace_table_token_16_th operating activities our and our predecessor 's operating cash flow is impacted by many variables , the most significant of which is the change in prices for oil , natural gas and ngls . prices for these commodities are determined primarily by prevailing market conditions . regional and worldwide economic activity , weather and other substantially variable factors influence market conditions for these products . these factors are beyond our and our predecessor 's control and are difficult to predict . cash flows provided by operating activities for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period were $ 18.6 million and $ 0.2 million , respectively . cash flows provided by operating activities for the combined year ended december 31 , 2017 were $ 18.8 million , an increase of $ 17.7 million compared to our predecessor 's cash flows provided by operating activities of $ 1.1 million for the year ended december 31 , 2016. the 79 increase was largely attributable to the $ 247.8 million acquisition of various mineral and royalty interests from the contributing parties at the closing of our ipo , the $ 29.3 million acquisition of various mineral and royalty interests throughout the 2017 period and the relevant production and revenues from those acquired interests . the decreases in cash flows provided by operating activities for the year ended december 31 , 2016 as compared to the year ended december 31 , 2015 of $ 1.6 million were largely attributable to lower oil , natural gas and ngl sales prices . investing activities cash flows used in investing activities for the period from february 8 , 2017 to december 31 , 2017 were $ 125.9 million , an increase of $ 125.8


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash flows the following table presents our and our predecessor 's cash flows for the periods indicated . replace_table_token_16_th operating activities our and our predecessor 's operating cash flow is impacted by many variables , the most significant of which is the change in prices for oil , natural gas and ngls . prices for these commodities are determined primarily by prevailing market conditions . regional and worldwide economic activity , weather and other substantially variable factors influence market conditions for these products . these factors are beyond our and our predecessor 's control and are difficult to predict . cash flows provided by operating activities for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period were $ 18.6 million and $ 0.2 million , respectively . cash flows provided by operating activities for the combined year ended december 31 , 2017 were $ 18.8 million , an increase of $ 17.7 million compared to our predecessor 's cash flows provided by operating activities of $ 1.1 million for the year ended december 31 , 2016. the 79 increase was largely attributable to the $ 247.8 million acquisition of various mineral and royalty interests from the contributing parties at the closing of our ipo , the $ 29.3 million acquisition of various mineral and royalty interests throughout the 2017 period and the relevant production and revenues from those acquired interests . the decreases in cash flows provided by operating activities for the year ended december 31 , 2016 as compared to the year ended december 31 , 2015 of $ 1.6 million were largely attributable to lower oil , natural gas and ngl sales prices . investing activities cash flows used in investing activities for the period from february 8 , 2017 to december 31 , 2017 were $ 125.9 million , an increase of $ 125.8
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 Suspicious Activity Report : the predecessor also had non-operated working interests in certain oil and natural gas properties . prior to the partnership 's ipo , the predecessor assigned its non-operated working interests and associated asset retirement obligations ( “ aro ” ) to an affiliated entity that was not contributed to the partnership . recent developments 2017 acquisitions in the second quarter of 2017 , we acquired mineral and royalty interests underlying 1.1 million gross acres , 6,881 net royalty acres , for an aggregate purchase price of approximately $ 16.8 million . the partnership funded these acquisitions with borrowings under its secured revolving credit facility . on october 9 , 2017 , we acquired mineral and royalty interests underlying 8,460 gross acres , 983 net royalty acres , for an aggregate purchase price of approximately $ 3.9 million in uintah county , utah . the partnership funded this acquisition with borrowings under its secured revolving credit facility . on november 8 , 2017 , we acquired mineral and royalty interests underlying 71,410 gross acres , 2,757 net royalty acres , for an aggregate purchase price of approximately $ 7.3 million in various counties in arkansas . the partnership funded this acquisition with borrowings under its secured revolving credit facility . on december 13 , 2017 , we acquired a diverse package of mineral and overriding royalty interests for an aggregate purchase price of approximately $ 1.3 million . the core positions are located in california and wyoming and the package also includes small interests located in kansas , arkansas , texas and utah . the partnership funded this acquisition with borrowings under its secured revolving credit facility . 69 commodity derivative instruments on november 14 , 2017 , we entered into an international swaps and derivatives association , inc ( “ isda ” ) master agreement ( “ master agreement ” ) with frost bank for oil and natural gas commodity derivatives for the years ended december 31 , 2018 and 2019 , effective january 1 , 2018 and 2019 , respectively , with a trade date of december 12 , 2017. business environment commodity prices and demand oil and natural gas prices have been historically volatile and may continue to be volatile in the future . in late 2014 , prices for oil and natural gas declined precipitously , and prices remained low throughout 2015 and for the majority of 2016 until rebounding in the fourth quarter of 2016. for the year ended december 31 , 2017 , wti ranged from a low of $ 42.48 per bbl on june 21 , 2017 to a high of $ 60.46 per bbl on december 29 , 2017 , and for the year ended december 31 , 2016 , wti ranged from a low of $ 26.19 per bbl on february 11 , 2016 to a high of $ 54.01 per bbl on december 28 , 2016. for the year ended december 31 , 2017 the henry hub spot market price of natural gas ranged from a low of $ 2.44 per mmbtu on february 27 , 2017 to a high of $ 3.71 per mmbtu on january 2 , 2017 , and for the year ended december 31 , 2016 , the henry hub spot market price of natural gas has ranged from a low of $ 1.49 per mmbtu on march 4 , 2016 to a high of $ 3.80 per mmbtu on december 7 , 2016. on february 26 , 2018 , the wti posted price for crude oil was $ 63.81 per bbl and the henry hub spot market price of natural gas was $ 2.60 per mmbtu . the following table , as reported by the eia , sets forth the average prices for oil and natural gas . replace_table_token_12_th source : eia . rig count drilling on our acreage is dependent upon the exploration and production companies that lease our acreage . as such , we monitor rig counts in an effort to identify existing and future leasing and drilling activity on our acreage . the baker hughes u.s. rotary rig count was 929 active rigs at december 31 , 2017 , a greater than 41 % increase from 658 active rigs at december 31 , 2016. the 658 active rig count at december 31 , 2016 declined 6 % from 698 active rigs at december 31 , 2015. in addition , according to the baker hughes u.s. rotary rig count , rig activity in the 20 states in which we own mineral and royalty interests increased 44 % from 590 active rigs at december 31 , 2016 to 847 active rigs at december 31 , 2017. the 590 active rig count at december 31 , 2016 declined 6 % from 630 active rigs at december 31 , 2015. the active rig count across our acreage at december 31 , 2017 totaled 19 rigs , a 27 % increase compared to the 15 rigs at year-end 2016. sources of our revenue our revenues and our predecessor 's revenues are derived from royalty payments we receive from our operators based on the sale of oil , natural gas and ngl production , as well as the sale of ngls that are extracted from natural gas during processing . for the period from february 8 , 2017 to december 31 , 2017 , our revenues were generated 59 % from oil sales , 28 % from natural gas sales , 11 % from ngl sales and 2 % from other sales . for the period from january 1 , 2017 to february 7 , 2017 ( the “ predecessor 2017 period ” ) , our predecessor 's revenues were generated 55 % from oil sales , 36 % from natural gas sales and 9 % from ngl sales . story_separator_special_tag the production volumes were 1,067,169 boe or 3,264 boe/d and 10,410 boe or 274 boe/d , for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period , respectively . the combined production for the year ended december 31 , 2017 was 1,077,579 boe or 2,952 boe/d , an increase of 916,836 boe or 2,512 boe/d , from 160,743 boe or 440 boe/d , for year ended december 31 , 2016. our predecessor 's volumes for the year ended december 31 , 2016 decreased by 12,326 or 34 boe/d from 173,070 or 474 boe/d for the year ended december 31 , 2015. this decrease in production for the year ended december 31 , 2016 when compared to production for the year ended december 31 , 2015 was primarily due to decreased drilling on our predecessor 's interests during the year ended december 31 , 2016 due to the industry wide steep declines in the price of oil , natural gas and ngls experienced through most of 2016. our operators received an average of $ 47.08 per bbl of oil , $ 2.74 per mcf of natural gas and $ 21.50 per bbl of ngl for the volumes sold during the period from february 8 , 2017 to december 31 , 2017. our predecessor 's operators received an average of $ 47.04 per bbl of oil , $ 3.47 per mcf of natural gas and $ 24.61 per bbl of ngl for the volumes sold during the predecessor 2017 period . for the combined year ended december 31 , 2017 , the operators received an average of $ 47.08 per bbl of oil , $ 2.74 per mcf of natural gas and $ 21.52 per bbl of ngl for the volumes sold . average prices received by the operators during the combined year ended december 31 , 2017 increased 21.7 % or $ 8.39 per bbl of oil and 24.0 % or $ 0.53 per mcf of natural gas as compared to our predecessor 's operators which received an average of $ 38.69 per bbl of oil , $ 2.21 per mcf of natural gas and $ 15.99 per bbl of ngl for the volumes sold during the year ended december 31 , 2016 these increases are consistent with prices experienced in the market , specifically when compared to the eia average price increases of 17.8 % or $ 7.66 per bbl of oil and 18.7 % or $ 0.47 per mcf of natural gas for the comparable periods . our predecessor 's operators received an average of $ 49.79 per bbl of oil , $ 2.44 per mcf of natural gas and $ 17.56 per bbl of ngl for the volumes sold during the year ended december 31 , 2015. average prices received by the predecessor 's operators during the year ended december 31 , 2016 decreased 22.2 % or $ 11.10 per bbl of oil and 9.4 % or $ 0.23 per mcf of natural gas as compared to the year ended december 31 , 2015. production and ad valorem taxes our production and ad valorem taxes for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period were $ 2.5 million and $ 0.02 million , respectively . the combined production and ad valorem taxes for the year ended december 31 , 2017 were $ 2.5 million , an increase of $ 2.2 million from $ 0.3 million for year ended december 31 , 2016. the increase in production and ad valorem taxes was attributable to the $ 247.8 million acquisition of various mineral and royalty interests from the contributing parties at the closing of our ipo , the $ 29.3 million acquisition of various mineral and royalty interests throughout the 2017 period and the relevant production and revenues from those acquired interests . for the year ended december 31 , 2016 , our predecessor 's production and ad valorem taxes decreased by $ 0.1 million , from $ 0.4 million for the year ended december 31 , 2015. the decrease in production and ad valorem taxes was attributable to a decline in oil , natural gas and natural gas liquids prices . depreciation , depletion and accretion expense our and our predecessor 's depreciation , depletion and accretion expense for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period was $ 15.5 million and $ 0.1 million , respectively , for a combined expense of $ 15.6 million for the year ended december 31 , 2017. this was an increase of $ 14.0 million from our predecessor 's depreciation , depletion and accretion expense of $ 1.6 million for the year ended december 31 , 2016. the increase in the depreciation , depletion and accretion expense was primarily attributable to the $ 247.8 million acquisition of various mineral and royalty interests from the contributing parties at the closing of our ipo , the $ 29.3 million acquisition of various mineral and royalty interests throughout the 2017 period and the relevant production from those acquired properties . 76 our predecessor 's depreciation , depletion and accretion expense decreased by $ 2.4 million for the year ended december 31 , 2016 from $ 4.0 million for the year ended december 31 , 2015. depletion is the amount of cost basis of oil and natural gas properties at the beginning of a period attributable to the volume of hydrocarbons extracted during such period , calculated on a units‑of‑production basis . estimates of proved developed producing reserves are a major component in the calculation of depletion . our and our predecessor 's average depletion rate per barrel was $ 14.43 and $ 10.31 for the period from february 8 , 2017 to december 31 , 2017 and the predecessor 2017 period , respectively . the combined average depletion rate per barrel for the year ended december 31 , 2017

