Relying on innovation in the south of the tenth district of Tahe, Northwest Oilfield, stable production for 6 consecutive years

Sinopec News.
com reports 110 oil wells in the south of the 10th district of Tahe in the Northwest Oilfield, with a history of 15 years of development
.

The transformation of geological understanding broadens the space for increasing reserves

Reserve replacement is the basis for stable production of old oilfields.
Although there is no replacement of reserves in new areas in the south of the tenth district, the deepening of geological understanding has broadened the space for increasing reserves by relying on old wells
.

A few years ago, the production reservoir of the original vertical well of Well TH10240 was a karst reservoir in the T708 fractured-vuggy zone, but shortly after continuous production, the liquid supply was insufficient until production was stopped
.

After that, the technical staff continued to deepen and improve the understanding of "break-solution" reservoirs.
Based on the deployment of sidetracking in old wells, the accumulated recoverable economic reserves were increased by more than 1.
3 million tons, and the drilling rate of high-yield wells reached more than 70%
.

Changes in mining technology have increased the production of reserves

Looking at the stable production development process of the southern block of the ten districts, it is not difficult to find that water injection to supplement energy is the main mining method for stable production
.

　　After the natural energy failure of TH10276 well, it entered the stage of single well water injection and oil replacement
.

　　In the past three years, a total of 29 wells in the south of the ten district have implemented high-pressure and large-scale water injection, with an average water injection pressure of 19MPa, an average periodic water injection of 9,000 cubic meters, and a cumulative oil increase of 138,000 tons
.

　　For some oil wells with single well water injection failure and not suitable for high-pressure hydraulic expansion to supplement energy, technicians innovated their thinking, jumped out of the single well and looked at the unit, implemented well group balanced water injection, and the unit integral water injection, which has a significant effect
.

　　Transformation of management methods to realize fine management of oil wells

　　The stable production of oil wells depends not only on the deepening of geological understanding and the advancement of mining technology, but also on fine management and maintenance
.

　　The operation and maintenance of oil wells in the southern block of the tenth district was originally undertaken by three contractors, with many coordination links, high personnel turnover rate and difficult management
.

　　In 2016, the oilfield company built Sinopec's first "well-station integration" intelligent management demonstration zone in the south of the tenth district.
The oil wells have realized remote monitoring, drone line inspection, and online water-bearing monitoring
.

　　After the formation of the strategic contractor, the oil production plant’s assessment of the contractor highlighted the quality and efficiency of production and operation, and greatly mobilized the contractor’s staff to take the initiative to work.
The original more than 600 days have been extended to more than 800 days now
.