Northwest Oilfield bucks the trend and seizes the initiative to increase reserves and production

Sinopec News Network reported on May 25, at the production site of Well TK915-5X in the No.

Since the beginning of this year, affected by various factors such as the natural decline and increase in the old area and the increase in the water cut of the reservoir, the oil and gas production of the plant has been in a state of climbing.

Refined geological research boosts understanding

The Carboniferous lithologic oil and gas reservoir is the main position for the plant to increase reserves and production this year.

"Through research, we found that the two blocks C1 and C5 are located in the salt-edge structural fault zone, which is rich in oil and gas and is a key area for expanding new traps.

The TK915-5X well located in the fault zone is a development well.

It has been 21 years since Tahe District 1 has been developed, and it is also facing the problem of re-understanding and breaking through the geology.

Through careful research, the technicians finally opened a breakthrough in the TK135 well.

"At present, we have implemented hole replenishment measures in 6 low-yield wells including TK101 and TK135.

　　Reconstruction of the effective reserves of underground well patterns and reuse

　　Well pattern reconstruction is a key project for increasing reserves and production this year.

　　Since the beginning of this year, the plant has strengthened well pattern reconstruction in the second and fourth areas of Tahe.

　　T402 is a gas injection well in the S48 unit of Tahe 4th District.

　　"We use various methods such as gas flooding, water flooding and combined flooding to expand the oil and gas swept volume and achieve the purpose of improving oil recovery.

　　The output of Tahe District is decreasing and increasing, and it is necessary to find a new breakthrough.

　　"As long as we dare to break through the problems and take practical and effective measures, we will surely be able to win the battle for increasing reserves and production.

　　Re-innovation of measures to increase oil production through process linkage

　　Underground power and process linkage are an important feature of the plant's recent production activities.

　　Since the beginning of this year, we have continued to increase the control of oil and gas wells.

　　In the production process of the pumping pump of a mechanical production well, problems such as low tensile strength and difficulty in pumping heavy oil often occur.
The process technicians start with the structure and material of the pump, optimize and upgrade, and form a set of "rod pumps Upgrading and upgrading integrated technology" reduces the frequency of pump inspection and can save more than 13 million yuan in maintenance costs per year.
This achievement won the second prize of the National Energy Chemical Geological System Excellent Staff Technological Innovation Achievement Award.

　　Aiming at abnormal wells, based on the comparison and investigation of the well temperature of each well, the technicians have summarized a set of oil well abnormality judgment method, namely the "well temperature chart" method, which has been applied in many wells such as TK910H to reduce production loss by 920 Ton.

　　The horizontal well plugging process is difficult to construct and has high risks.
The plant innovated process technology and optimized the mud system.
The plugging process of the horizontal section of Well T903-10H was successful for the first time, with a daily increase of 15 tons of oil.
At present, the plant has formed 11 complex workover technologies and 9 low-cost process technologies in three categories: open-hole treatment, casing damage treatment, and falling object salvage, which provides a guarantee for increasing reserves and production.

　　(Kong Shouzeng and Wang Pengfei)