Study On Geological Guidance While Drilling In Xijiang 24B Oilfield

After nearly 20 years of exploitation,Xijiang 24B oilfield has entered a period of high water cut,the production in the oil area is decreasing,and there is a serious underproduction in the oil area,so it is necessary to develop and adjust the production of Xijiang 24B oilfield.Horizontal wells have become an important way of increasing production.Using geological guidance technology,drilling engineering and reservoir development are perfectly combined.In this paper,the LWD tool combination of inclined section and horizontal section is studied,and the optimization scheme of tool combination is put forward,and the gas ratio method of mud logging is studied.The technology of real-time data transmission is introduced.At present,the oil recovery of Xijiang 24B oil field has reached 35.2%,so it is urgent to develop the remaining oil and thin layer in the reservoir that has been developed for many years.Through the analysis of the level of 8 wells this time,the law of remaining oil is analyzed.The development of bottom water reservoir and thin layer are studied and analyzed to find out the regularity.According to the reservoir,physical property and development characteristics of Xijiang 24B oilfield,the horizontal section of Xijiang 24B is divided into thin layer reservoir,bottom water reservoir and remaining oil reservoir.At the same time,the geological orientation while drilling in these horizontal sections is analyzed,and the problems encountered during horizontal section drilling and the solutions and construction schemes are put forward.According to the research,the bottom water reservoirs which satisfy the production demand,have slow upper water and have good productivity are put forward.The development process of horizontal wells in residual oil and thin layer reservoirs is successfully developed while drilling.After this adjustment,Xijiang 24B oil field has become a "new oil field" with an annual output of 600,000 square.The paper puts forward the conclusion of geological guidance while drilling in Xijiang 24B oilfield,which is of great guiding significance to the development of horizontal wells in the future.The research results are not only used in Xijiang 24B oilfield,but also have great reference significance for other oilfield development in late production period.