The Application of Simple Controlled Pressure Drilling Technology in Yingxi Block

Under the reservoir for exploration and development of Yingxi block in Qinghai oilfield, the chaigou formation is oil and gas reservoir complicated by the fault, and the exploration has been carried out over the years. The reservoir is a fracture - matrix pore dual medium type, with strong heterogen...

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Bibliographic Details
Published in:E3S web of conferences 2018-01, Vol.53, p.3003
Main Authors: Guohui, ZHANG, Hugui, rong, CHEN, Xinyun, LIU, Xiwen, ZHANG
Format: Article
Language:English
Online Access:Get full text
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Summary:Under the reservoir for exploration and development of Yingxi block in Qinghai oilfield, the chaigou formation is oil and gas reservoir complicated by the fault, and the exploration has been carried out over the years. The reservoir is a fracture - matrix pore dual medium type, with strong heterogeneity, fracture development degree, porosity and permeability variation range. The reservoir is very sensitive to wellbore pressure, the safety drilling density window is narrow, the conventional drilling leakage is frequent, the reservoir protection effect is poor, and the mechanical drilling rate is low. In 2016 six wells were selected for easy control and pressure drilling in the lower E 2 3 formation. The technology experiment has obtained good application effect, which provides successful experience to solve the complex and improve the engineering quality and benefit.
ISSN:2267-1242
2267-1242
DOI:10.1051/e3sconf/20185303003