7. BUSINESS SEGMENT INFORMATION 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 tools offered off the well site and are more 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: ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Three months ended ? Nine months ended ? ? September 30, ? September 30, (in thousands) 2019 2018 2019 2018 Technical Services: ? ? ? ? Pressure Pumping ? $ 111,163 ? $ 237,487 ? $ 428,988 ? $ 762,527 Downhole Tools ? 111,619 ? 112,798 ? 334,053 ? 313,360 Coiled Tubing ? 19,622 ? 26,248 ? 61,084 ? 78,848 Nitrogen ? 10,140 ? 12,645 ? 33,667 ? 35,860 Snubbing ? 4,407 ? 4,257 ? 12,225 ? 14,284 All other ? 17,532 ? 27,836 ? 56,579 ? 85,307 Total Technical Services ? $ 274,483 ? $ 421,271 ? $ 926,596 ? $ 1,290,186 Support Services: ? ? ? ? ? ? ? ? Rental Tools ? $ 12,479 ? $ 13,957 ? $ 40,377 ? $ 36,527 All other ? 6,278 ? 4,766 ? 19,439 ? 17,541 Total Support Services ? $ 18,757 ? $ 18,723 ? $ 59,816 ? $ 54,068 Total revenues ? $ 293,240 ? $ 439,994 ? $ 986,412 ? $ 1,344,254 ? The following summarizes revenues for the United States and separately for all international locations combined for the three and nine months ended September 30, 2019. 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. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Three months ended ? Nine months ended ? ? September 30, ? September 30, (in thousands) 2019 2018 2019 2018 United States revenues ? $ 275,928 ? $ 417,349 ? $ 933,583 ? $ 1,278,655 International revenues ? 17,312 ? 22,645 ? 52,829 ? 65,599 Total revenues ? $ 293,240 ? $ 439,994 ? $ 986,412 ? $ 1,344,254 ? 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 with respect RPCs reportable segments for the three and nine months ended September 30, 2019 and 2018 are shown in the following table: ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Three months ended ? Nine months ended ? ? September 30, ? September 30, (in thousands) 2019 2018 2019 2018 Revenues: ? ? ? ? Technical Services ? $ 274,483 ? $ 421,271 ? $ 926,596 ? $ 1,290,186 Support Services ? 18,757 ? 18,723 ? 59,816 ? 54,068 Total revenues ? $ 293,240 ? $ 439,994 ? $ 986,412 ? $ 1,344,254 Operating (loss) income: ? ? ? ? ? ? ? ? Technical Services ? $ (18,174) ? $ 56,209 ? $ (15,782) ? $ 196,838 Support Services ? 1,632 ? 1,787 ? 8,787 ? 2,075 Corporate Expenses ? (2,720) ? (3,729) ? (10,678) ? (11,992) Impairment and Other Charges (1) ? ? (71,650) ? ?  ? ? (71,650) ? ?  (Loss) Gain on disposition of assets, net ? (1,727) ? 286 ? 2,910 ? 3,459 Total operating (loss) income ? $ (92,639) ? $ 54,553 ? $ (86,413) ? $ 190,380 Interest expense ? (8) ? (150) ? (261) ? (368) Interest income ? 182 ? 783 ? 1,576 ? 1,643 Other (expense) income , net ? (937) ? 287 ? (545) ? 9,786 (Loss) Income before income taxes ? $ (93,402) ? $ 55,473 ? $ (85,643) ? $ 201,441 (1) Represents $69,640 related to Technical Services and $2,010 related to Corporate expenses. ? ? ? ? ? ? ? ? ? ? ? ? ? ? As of and for the nine months ended ? Technical ? Support ? ? ? ? ? ? September 30, 2019 Services Services Corporate Total (in thousands) ? ? ? ? Depreciation and amortization ? $ 122,827 ? $ 7,026 ? $ 234 ? $ 130,087 Capital expenditures ? 198,757 ? 8,546 ? 1,960 ? 209,263 Identifiable assets ? $ 963,544 ? $ 77,848 ? $ 68,471 ? $ 1,109,863 ? ? ? ? ? ? ? ? ? ? ? ? ? ? As of and for the nine months ended ? Technical ? Support ? ? ? ? ? ? September 30, 2018 Services Services Corporate Total (in thousands) ? ? ? ? ? ? ? ? ? ? ? ? Depreciation and amortization ? $ 110,991 ? $ 9,247 ? $ 329 ? $ 120,567 Capital expenditures ? 194,115 ? 4,260 ? 1,206 ? 199,581 Identifiable assets ? $ 984,397 ? $ 77,870 ? $ 183,395 ? $ 1,245,662 ?