石油与天然气化工2015，Vol.44Issue(6)：96-100,5.DOI:10.3969/j.issn.1007-3426.2015.06.018
川西页岩气藏新型水基钻井液体系的性能评价及现场应用
Performance evaluation and field application of new water-based drilling fluid system in western Sichuan shale gas reservoir
摘要
Abstract
Aiming at the reservoir characteristics of micro fractures developed and brittle shale in western Sichuan shale gas reservoir ,a new water-based drilling fluid system was prepared ,which named strong inhibition and strong blocking polyamine imitation oil-based water-based drilling fluid system CXWBM-1 . The full performance , property of inhibition , plugging , lubrication and anti pollution were evaluated through laboratory experiments .The results show that the second recovery rate of western Sichuan shale sample for CXWBM-1 drilling fluid system was over 95% , and CXWBM-1 can effectively block micro cracks or pores of 0 .5 -15 μm ,the API loss of drilling fluid systems can be controlled in 2mL .CXWBM-1 system has low viscosity coefficient and low friction coefficient ,the system has good lubricating property . CXWBM-1 system also has salt resistance ability ,calcium resistance ability and debris contamination resistance .The application in XYHF-1 well of Chuanxi shale gas reservoir showed that the new developed water-based drilling fluid system can prevent swelling of shale and collapse necking ,this can ensure the safety drilling .The system has broad application prospects in drilling and development of similar shale gas reservoirs .关键词
水基钻井液/抑制性能/封堵性能/润滑性能/抗污染性能Key words
water-based drilling fluid/inhibition property/plugging property/lubrication property/anti-pollution property分类
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万小迅..川西页岩气藏新型水基钻井液体系的性能评价及现场应用[J].石油与天然气化工,2015,44(6):96-100,5.基金项目
国家科技重大专项"复杂地质条件下深井钻井液与高温高压固井技术"(2011ZX05021-004). （2011ZX05021-004）
