ON IMPLEMENTATION OF EFFICIENT METHODS TO IMPROVE ACCURACY OF MEASURING GAS-OIL RATIO IN MATURE FIELDS
Davydova O.V., Gabdrakhmanov N.Kh.
The paper reviews development of efficient methods to improve accuracy of measuring current and total gas-oil ratio (GOR) in mature fields. Development of mature fields becomes complicated due to production-induced factors, such as formation temperature, high water cut, low reservoir pressure, low GOR, which greatly influence the accuracy of GOR measurement by present-day automatic group metering stations. Analysis of home-made commercial group metering stations performance shows that they do not comply with requirements for GOR measurement accuracy, both in terms of environmental safety and GOR level control to increase the efficiency of enhanced oil recovery techniques based on water-alternating-gas injection. Based on the performed experimental studies, the authors could solve a technical challenge involving improvement of present-day commercial measuring equipment, as well as provide technical justification for development of a measuring unit for rapid estimation of gas-oil ratio in a multi-zone well without lifting the oil samples to the surface.
O.V. Davydova Sposob izmereniya gazovogo faktora [Gas-oil ratio measuring technique]. Collection of research papers “Sovremennye tekhnologii v neftegazovom dele2011” [Present-day technologies for oil and gas production-2011]. Ufa: UGNTU Publ, 2011, Vol. No.2, p.269 (in Russian)
Yu.A. Gutorov, P.A. Larin Tekhnologiya povysheniya nefteotdachi posredstvom vodogazovogo vozdejstviya na produktivnyj plast [Enhanced oil recovery technique based on water-alternating-gas injection]. Teaching guide, Oktyabrsky: UGNTU Publ, 2013, 72 p. No.2, series: Neftegazovoye delo (in Russian)
Yu.A. Gutorov, L.Z. Arslanova Upravlenie reologicheskimi svojstvami uglevodorodov v plastovyh usloviyah s cel'yu povysheniya ehffektivnosti dobychi TRIZ [Control of hydrocarbon rheology in-situ to improve the efficiency of unconventional reserves recovery]. Teaching guide, No.12, Series: Neftegazovoye delo. Oktyabrsky: UGNTU Publ, 43 p. (in Russian)
Yu.A. Gutorov, A.Yu Gutorov, L.F. Yusupova Tekhnologiya povysheniya nefteotdachi na osnove primeneniya OREH i ORZ mnogoplastovyh ob"ektov [Enhanced oil recovery based on application of dual completion systems for production and injection in multizone reservoirs]. Teaching guide, No.12, Series: Neftegazovoye delo. Oktyabrsky: UGNTU Publ, 2017, 102 p. (in Russian)
Izmereniya produkcii skvazhin neftyanyh, gazovyh i gazokondensatnyh mestorozhdenij [Wellstream metering in oil, gas, and gas-condensate fields]. Available at: http://ozna.ru/upload/iblock/169/1694c10a48a790fcdcc2e4702dde61ff.pdf (in Russian)
O.V. Davydova, M.D. Valeev, A.G. Gazarov, K.E. Kordik Sravnitel'nyj analiz izmeritel'nyh ustanovok dlya opredeleniya gazovogo faktora [Comparative analysis of GOR measuring units]. Neftyanoye hozyajstvo, Moscow, 2011, No.1, pp. 96-99 (in Russian)
O.V. Davydova Eksperimental'nye issledovaniya separacii gaza na prieme pogruzhnyh nasosov [Experimental studies of gas separation at the bottom-hole pump suction]. International Science and Technology Conference “Present-day technologies for oil and gas production-2013”, 23 March 2013 (In Russian)
Davydova O.V., PhD student, Oktyabrsky branch of Ufa State Petroleum Technical University, Republic of Bashkortostan, Russian Federation
Gabdrakhmanov N.Kh., Dr.Sc., Professor of Exploration and Development of Oil and Gas Fields, Oktyabrsky branch of Ufa State Petroleum Technical University, Republic of Bashkortostan, Russian Federation