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Sinopec News Network reported on August 25 that the pilot test of the Pai 612 thermochemical drive, which is being carried out in the Junggar Basin, Xinjiang, is progressing smoothly
.
In order to ensure the stable production of the heavy oil thermal recovery block of the Chunfeng Oilfield in the western exploration area, Shengli Oilfield Xinchun Company actively accelerates the research and application of the shallow and thin layer extra-heavy oil thermal-chemical flooding technology
.
With the support of oilfield scientific research institutes, the company established a thermal-chemical flooding technology route combining "heat (steam), agent (viscosity-reducing oil displacement agent, foaming agent), and gas (nitrogen)".
Pilot tests were carried out on Block 612, covering 1.
27 million tons of reserves, and 9 anti-nine-point method well groups were designed.
Three years later, the anti-five-point method was converted.
The final recovery rate is expected to be 52%, an increase of 28.
6 percentage points
.
Experts believe that the thermochemical composite enhanced oil recovery technology is an important replacement technology to further greatly enhance the oil recovery in the late stage of heavy oil steam huff and puff
.
The test plan was officially approved in mid-June.
At present, the workload of 8 monitoring wells has been completed, two well groups are implementing steam flooding, and 3 new wells will be put into production in the near future
