Optimization Program for Difficult-to-Produce Reservoir in Bonan Oil Feild



After many years’ development of oil reservoir in Shengli, tons of oil have been drilled out of reservoir and the condition of underground has been changed a lot. Nowadays, the quantity of oil production has been reduced rapidly, therefore, there is a new solution for old reservoir, to redevelop this reservoir with appropriate adjustment in drilling design and method. There are two main changes in this new solution, first one is to reduce the cost of wells in Yi 184 block. The second factor is optimizing parameters of the drilling design, such as casing program, drilling fluid system, drilling fluid material and etc. This paper is going to describe a solution for difficult-to-produce reservoir of Yi 184 block in Bonan oil field. It will be divided into 3 parts. The first part is introduction which is about the characteristics of formations and drilling difficulties in Yi 184 block. Second part is going to present the optimization of drilling design. Optimization of well construction and drilling fluid will be present in this part. The last part of this paper is a conclusion of the optimization program. 


Optimization; Difficult-to-produce; Adjustment; Redevelop; Yi 184 block

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DOI: http://dx.doi.org/10.3968/11028


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