China Petroleum Exploration ›› 2019, Vol. 24 ›› Issue (2): 196-202.DOI: 10.3969/j.issn.1672-7703.2019.02.007

• PETROLEUM GEOLOGY • Previous Articles     Next Articles

Precise management based on geology-engineering integration for exploration of complex oil reservoirs in Tuha oilfield

Sun Hongliang1, Liang Yu1, Wang Jing2, Qian Feng1, Cui Yanli1, Luo Jun3, Wang Bo1, Yang Ying1   

  1. 1 Exploration Company, PetroChina Tuha Oilfield Company;
    2 Shanshan Oil Production Plant, PetroChina Tuha Oilfield Company;
    3 Tuha Mud Logging Engineering Company, CNPC Xibu Drilling Engineering Co. Ltd
  • Received:2018-09-10 Revised:2019-03-01 Online:2019-03-15 Published:2019-03-15
  • Supported by:
     

Abstract: The Tuha oilfield has various types of reservoirs. To produce more reserves from complex reservoirs, precise management based on geology-engineering integration has been implemented with the support of advanced technologies, contributing to the low-cost exploration of complex reservoirs. A series of supporting techniques have been developed and improved. First, the ROP enhancement technique together with optimized casing program, and completion/logging design, help greatly reduce the drilling period and cost. Second, the technique based on geology-engineering integration is proposed to further investigate hydrocarbon accumulation mechanism and accurately predict reservoir sweet spots, so as to facilitate the optimization of exploration scheme. Third, the geosteering technique is developed to improve drill-in rate of horizontal wells. Fourth, special drilling fluid system and shallow horizontal well drilling techniques ensure safe and fast drilling operation with good quality. Fifth, the horizontal well + volume fracturing technology is promoted and improved for maximizing the recovery of reserves. These techniques have contributed several breakthroughs in the Tuha oilfield, with bulk reserves discovered.

 

Key words: Tuha oilfield, complex reservoir, horizontal well, volume fracturing, geology-engineering integration

CLC Number: