According to the lithology of Dalinghe reservoir in block Jin 27 and features of low permeability and heavy oil reservoir, as well as horizontal well drilling requirement, low bentonite silicon polymer drilling fluid was used in highly - deviated interval, and compound brine polymer completion fluid without bentonite was used in horizontal interval .

Practice and understanding of redevelopment in Block Xinhai 27;

Block Xinhai 27 is a thick and ultra thick conventional heavy oil reservoir with edge/bottom water.

The Jinzhou 27 structure area lies in the north of the Liaodong Bay nearby the Liaozhong hydrocarbon-generation over-pressured sag and has a strong charging ability.

At present, there are many problems in Liaohe Xinhuan-27 faulted-block such as low recovery percent, slow oil recovery rate, high injected pressure of injection well, deficient productivity.

Study and application of water invasion law in watered-out area of Block Jin 626;

In this paper, cyclic steam stimulation assisted with waterflooding method is used to carry out the cyclic steam stimulation research in terms of the reservoir engineering theory and the analysis of producing features, taking Block Jin 99 in Huanxiling Oilfield as an example.