ROP Improvement and Production Enhancement for Ultra-Deep Wells Based on Geology-Engineering Integration: A Case in Kuqa Depression, Tarim Basin

doi:10.7657/XJPG20220212

Abstract

Abstract:

The Kuqa depression in the Tarim basin is rich in oil and gas resources and has great potential for exploration. However, the geological setting in this area is complex and the target layers are generally buried deeper than 6 000 m, or even more than 8 000 m, making oil and gas exploration and development difficult. Considering the geological engineering characteristics and existing problems of ultra-deep wells in the Kuqa depression, a solution based on the concept of geology-engineering integration is proposed, and the successful practice of the first pre-salt highly-deviated well in Tarim oilfield is introduced. Research and practices show that geomechanical research is beneficial to reducing drilling complexities and increasing rate of penetration, can help select favorable reservoirs and optimize stimulation schemes, and finally support the ROP improvement and production enhancement. The geology-engineering integration is necessary for efficient development of complex oil and gas reservoirs. In this aspect, multiple disciplines will be collaborated in operations through the life cycle of each well to generate the maximum benefits and achieve overall progress from well location deployment, drilling engineering, well completion and stimulation to oil/gas production engineering, thereby facilitating the construction of large oil and gas fields.

Key words: Tarim basin, Kuqa depression, ultra-deep well, geology-engineering integration, geomechanics, highly deviated well, ROP improvement, production enhancement

CLC Number:

TE371

CAI Zhenzhong, XU Ke, ZHANG Hui, WANG Zhimin, YIN Guoqing, LIU Xinyu. ROP Improvement and Production Enhancement for Ultra-Deep Wells Based on Geology-Engineering Integration: A Case in Kuqa Depression, Tarim Basin[J]. Xinjiang Petroleum Geology, 2022, 43(2): 206-213.

Figures/Tables 7

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