Note 13: Business Segment and Entity wide Disclosures RPCs reportable segments are the same as its operating segments. RPC manages its business under Technical Services and Support Services. Technical Services is comprised of service lines that generate revenue based on equipment, personnel or materials at the well site and are closely aligned with completion and production activities of the customers. Support Services is comprised of service lines which generate revenue from services and equipment offered off the well site and are closely aligned with the customers drilling activities. Selected overhead including centralized support services and regulatory compliance are classified as Corporate. Technical Services consists primarily of pressure pumping, downhole tools, coiled tubing, snubbing, nitrogen, well control, wireline and fishing. The services offered under Technical Services are high capital and personnel intensive businesses. The Company considers all of these services to be closely integrated oil and gas well servicing businesses, and makes resource allocation and performance assessment decisions based on this operating segment as a whole across these various services. Support Services consist primarily of drill pipe and related tools, pipe handling, pipe inspection and storage services, and oilfield training and consulting services. The demand for these services tends to be influenced primarily by customer drilling-related activity levels. The Companys Chief Operating Decision Maker (CODM) assesses performance and makes resource allocation decisions regarding, among others, staffing, growth and maintenance capital expenditures and key initiatives based on the operating segments outlined above. Segment Revenues: RPCs operating segment revenues by major service lines are shown in the following table: (in thousands) 2018 2017 2016 Technical Services: Pressure Pumping $ 945,919 $ 993,538 $ 336,550 Downhole Tools 423,811 294,606 169,754 Coiled Tubing 100,049 109,462 70,511 Nitrogen 49,198 38,961 37,172 Snubbing 17,818 23,838 18,903 All other 110,418 77,946 46,764 Total Technical Services $ 1,647,213 $ 1,538,351 $ 679,654 Support Services: Rental Tools $ 50,809 $ 30,264 $ 21,443 All other 22,983 26,612 27,877 Total Support Services $ 73,792 $ 56,876 $ 49,320 Total Revenues $ 1,721,005 $ 1,595,227 $ 728,974 The accounting policies of the reportable segments are the same as those described in Note 1 to these consolidated financial statements. RPC evaluates the performance of its segments based on revenues, operating profits and return on invested capital. Gains or losses on disposition of assets are reviewed by the CODM on a consolidated basis, and accordingly the Company does not report gains or losses at the segment level. Inter-segment revenues are generally recorded in segment operating results at prices that management believes approximate prices for arms length transactions and are not material to operating results. Summarized financial information concerning RPCs reportable segments for the years ended December 31, 2018, 2017 and 2016 are shown in the following table: (in thousands) Technical Services Support Services Corporate Gain (loss) on disposition of assets, net Total 2018 Revenues $ 1,647,213 $ 73,792 $  $  $ 1,721,005 Operating profit (loss) 216,703 4,612 (14,629 ) 3,344 210,030 Capital expenditures 230,262 10,364 1,984  242,610 Depreciation and amortization 150,508 12,174 438  163,120 Identifiable assets 925,305 78,413 195,862  1,199,580 2017 Revenues $ 1,538,351 $ 56,876 $  $  $ 1,595,227 Operating (loss) profit 251,476 (12,228 ) (17,561 ) 4,530 226,217 Capital expenditures 106,131 9,949 1,429  117,509 Depreciation and amortization 145,507 17,570 460  163,537 Identifiable assets 896,803 75,568 174,853  1,147,224 2016 Revenues $ 679,654 $ 49,320 $  $  $ 728,974 Operating loss (203,804 ) (26,021 ) (17,037 ) 7,920 (238,942 ) Capital expenditures 28,380 2,928 2,630  33,938 Depreciation and amortization 191,181 25,606 471  217,258 Identifiable assets 733,008 76,876 225,568  1,035,452 The following summarizes revenues for the United States and separately for all international locations combined for the years ended December 31, 2018, 2017 and 2016. The revenues are presented based on the location of the use of the equipment or services. Assets related to international operations are less than 10 percent of RPCs consolidated assets, and therefore are not presented. Years ended December 31, 2018 2017 2016 (in thousands) United States Revenues $ 1,630,569 $ 1,539,462 $ 677,755 International Revenues 90,436 55,765 51,219 $ 1,721,005 $ 1,595,227 $ 728,974