四川盆地高石梯构造灯影组四段溶蚀孔洞型储层类型及组合模式  

The type and combination pattern of karst vuggy reservoir in the fourth member of the Dengying Formation of Gaoshiti structure in Sichuan Basin

作　　者：张林[1] 万玉金[1] 杨洪志[2] 苏云河[1] 张满郎[1] Zhang Lin Wan Yu-jin Yang Hong zhi Su Yun-he Zhang Man-lang(PetroChina Research Institute of Petroleum Exploration and Development ,Langfang 065007 ,China Research Institute of Petroleum Exploration and Development ,PetroChina Southwest Oil ＆ Gasfield Company, Chengdu 610000, China)

机构地区：[1]中国石油勘探开发研究院,河北廊坊065007 [2]中国石油西南油气田分公司勘探开发研究院,四川成都610000

出　　处：《天然气地球科学》2017年第8期1191-1198,共8页Natural Gas Geoscience

基　　金：中国石油股份公司深层油气重大专项"深层油气藏开发关键技术"(编号:2014E-3203)资助

摘　　要：震旦纪高石梯构造位于四川盆地绵竹—长宁克拉通内裂陷东侧的台地边缘带,发育藻灰泥丘、砂屑滩及云坪,同时受震旦纪末期桐湾Ⅱ幕构造运动的抬升暴露剥蚀并形成岩溶风化壳。灯四段为溶蚀孔洞型白云岩储层,主要储集空间有溶洞、溶孔及晶间孔。在岩心、成像测井和常规测井对溶蚀孔洞型储层的定量判识基础上,划分洞穴型、孔洞型、孔隙型、裂缝—孔洞型、裂缝—孔隙型和裂缝型6类储集空间。在纵向上,根据储集空间类型及其组合特征提出洞穴—孔洞型、裂缝—孔洞型、孔洞型、裂缝—孔隙型、裂缝型5类储层组合模式。其中洞穴—孔洞型、裂缝—孔洞型为高产长期稳产型,是最好的储层组合类型;孔洞型为中产长期稳产型;裂缝—孔隙型和裂缝型则为高产短期稳产型。In the Sinian Dengsi period,the Gaoshiti-Moxi structure located in east side of Mianzhu-Changning intracratonic rift.There is a platform edge with microfacies of algal plaster mound,psammitic beach and dolomitic flat.With the exposure and erosion of Tongwan H episode of tectonic uplift in the I.ate Sinian,it became Karst weathering crust formation.The Dengsi member was corrosion vuggy dolomite reservoir with main reservoir space of vug,pore and fracture. On the basis of the quantitative analysis with core description,imaging-log and conventional log,the reservoir space can be divided into six types,such as cavernous, vuggy,pore, fracture-vuggy, fracture-pore, and fracture. In the vertical, according to the type of reservoir space and its combination characteristics, there are five combination patterns, such as cave-vuggy, fracturevuggy,vuggy,fracture-pore and fracture. The cave vuggy type and fracture-vuggy type are the best reservoir combination pattern which has long-term high production and steady produce of gas. The vuggy type is long-term middle production and steady produce of gas, while fracture pore type and fracture type are high gas production and short stable period.

关 键 词：岩溶储层 组合模式 灯影组四段 高石梯 四川盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]