Research On Optimization Technology Of Lithological Reservoir Enrichment In Daqingzijing Oilfield

Daqingzijing oil field is a large lithologic reservoir group with billion ton magnitude reserve scale. It is located in the south part of Songliao Basin. In view of existing resource situation and production capacity constructing tasks, with summarize and deepen the cognize of our achievements, enhance detailed studies and fundamental research, and combine popularize the use of existing mature technology and new technology research, rely on horizontal well early production system and outskirt resource assessment. In this way we will gradually breakthrough the technology bottleneck, so that we can use main layer, potential layer, and low assay layer one by one. And push through the construct of deliverability steady and continual. This study through the research of main layer’s apex face palaeostructure, preferred 6 beneficial oil and gas banking lines as the target area of deliverability building. On this basis, use fine description microtectonics, practicable oil-aqueous interface block by block, dominated the edge expansion of main layer; and use the research of fine identify of single sandbody and facies controlled reservoir characteristic parameter, guidance the well location deploy in lithologic deposit area. At the same time, actively promote the use of production seismology technology, breakthrough technology bottleneck of distinguishing sand body in potential layer, guidance the gradually effective use at Qing Three length lithologic deposit. Through the deep research of reservoir control factors, further clarify the control factors of complex oil-water relationship at outer edge, provide basis for the geometric arrangement of wells. Using it as a base, carry out early production system of horizontal drainhole, increase the single well deliverability level. Promote the benefits development of light grade resources. At the same time closely link with the outer-ring potential layer’s evaluation results, open up production experimentation area, build flood pattern, practicable beneficial well location. In the area of resource assessment, through make unused resource classification evaluation meticulous, guide the selective beneficial reserves. According to the characteristics of the distribution of unused resources, highlight the main layer evaluation at layer system, rearrange the potential distribution of unused resources according to layer system and member, optimization the combined use of target with potential.