克拉玛依油田中三叠统克下组油气产能评价

Productivity Evaluation of Lower Karamay Formation of the Middle Triassic in Karamay Oilfield

石勇 方志斌 卢炳雄 徐欣 于景维

SHIYong FANGZhibin LUBingxiong XUXin YUJingwei

中国石油新疆油田第二采油厂, 新疆 克拉玛依 834000 南宁师范大学地理科学与规划学院, 广西 南宁 530001 中国石油大学(北京)克拉玛依校区, 新疆 克拉玛依 834000

The Second Oil Production Plant, CNPC, Karamay, Xinjiang 834000, China School of Geography & Planning, Nanning Normal University, Nanning, Guangxi 530001, China Karamay Campus of China University of Petroleum, Karamay, Xinjiang 834000, China

新疆克拉玛依油田530井区下克拉玛依组具有较大油气勘探开发潜力，但单井产能差异较大，阻碍该区目的层进一步的勘探开发。以多油层产出的S2砂层组为研究对象，利用钻井岩芯观察、测井、粒度、薄片、高压压汞、物性以及敏感性等多种宏观及微观分析资料，对沉积储层特征进行详细分析，将影响重点砂层产能的地质参数和工程参数同储层物性进行灰色关联分析，对未动用区油层产能进行评价。结果表明，研究区下克拉玛依组S2砂层组中有利油层微相为分支河道微相，针对S2–4和S2–5沉积微相中分支河道的展布可进行针对性地扩边。S2砂层组油层岩石类型以砾岩类为主，储集空间主要为次生孔隙和微裂缝，孔隙结构非均质性较强，储层物性相关性较好，同时粒径同含油性为正相关。未动用区S2–4和S2–5油层产能受工程参数影响大于地质参数，S2–4和S2–5油层开发前景较好。

There has a great oil and gas exploration potential in Lower Karamay Formation of 530 Well Block. However, the large differences of productivity between single wells have hindered further exploration and development work. Sedimentary and reservoir characters are searched based on combination of macro and micro data, such as observation of cores, logging, grain size, thin section, high pressure mercury injection, physical property and sentimental experiment, and make evaluation on productivity is made non-producing area with geology and engineer parameters by grey relation way. The results show that favorable reservoir micro-face is distributary channel, and development area of S2–4 and S2–5 can be enlarged by distribution trend of distributary channel. Main reservoir rock in S2 sand group is gravel, and the reserve space comprises of secondary pores and micro-faults which make pore structure complex, and the relationship between pore and permeability, grain size and oiliness is good. Engineer parameters have deeper affection on S2–4 and S2–5 reservoir productivity than geology parameters, and development potential of S2–4 and S2–5 reservoir is large.

10.11885/j.issn.1674-5086.2022.02.16.01