油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2013年
4期
12-15
,共4页
赵峥延%蒋建勋%张哲%王胤渊
趙崢延%蔣建勛%張哲%王胤淵
조쟁연%장건훈%장철%왕윤연
鄂尔多斯盆地%环县地区%长8储层%敏感性评价
鄂爾多斯盆地%環縣地區%長8儲層%敏感性評價
악이다사분지%배현지구%장8저층%민감성평개
Ordos basin%Huan county%Chang-8 reservoir%sensitivity evaluation
针对鄂尔多斯盆地环县地区长8储层低孔低渗的特点,对长8储层的速敏性、水敏性、盐敏性、碱敏性和酸敏性进行了储层敏感性试验,结合该储层岩石特征进行敏感性分析评价。结果表明,该区储层主要表现为弱速敏、弱水敏、弱盐敏、弱碱敏和中等程度酸敏,临界流速0.5 mL/min。因此,在鄂尔多斯盆地环县地区长8储层开发生产过程中应重点防治储层酸敏性给储层带来的伤害。
針對鄂爾多斯盆地環縣地區長8儲層低孔低滲的特點,對長8儲層的速敏性、水敏性、鹽敏性、堿敏性和痠敏性進行瞭儲層敏感性試驗,結閤該儲層巖石特徵進行敏感性分析評價。結果錶明,該區儲層主要錶現為弱速敏、弱水敏、弱鹽敏、弱堿敏和中等程度痠敏,臨界流速0.5 mL/min。因此,在鄂爾多斯盆地環縣地區長8儲層開髮生產過程中應重點防治儲層痠敏性給儲層帶來的傷害。
침대악이다사분지배현지구장8저층저공저삼적특점,대장8저층적속민성、수민성、염민성、감민성화산민성진행료저층민감성시험,결합해저층암석특정진행민감성분석평개。결과표명,해구저층주요표현위약속민、약수민、약염민、약감민화중등정도산민,림계류속0.5 mL/min。인차,재악이다사분지배현지구장8저층개발생산과정중응중점방치저층산민성급저층대래적상해。
Aiming at the low porosity and low permeability characteristics of Chang-8 reservoir in Huan county of Ordos basin, reservoir sensitivity test was carried out by speed sensitivity, water sensitivity, salt sensitivity, alkali sensitivity and acid sensitivity of Chang-8 reservoir. Meanwhile, combined with reservoir rock characteristics, sensitivity was analyzed and evaluated. The results showed that the reservoir in this area has weak speed sensitivity, weak water sensitivity, weak salt sensitivity, weak alkali sensitivity and moderate acid sensitivity, and the critical flow velocity is 0.5 mL/min. Therefore, it is important to prevent the reservoir damage caused by the acid sensitivity in the production development of Chang-8 reservoir in Huan county of Ordos basin.