New Northeast Oil and Gas Mechanism Takes a New Path

In order to realize the high-quality and profitable development of the Longfengshan Gas Field, at the end of October 2020, the Northeast Oil and Gas Branch will establish the Longfengshan Gas Field High-Efficiency Development Project Department​, and implement the "Project Single Evaluation, Single Plan, Single Production, "Single cost, single benefit calculation" operating mechanism.

"The new model stimulates new momentum"

The project department gives full play to the advantages of integration of geology and engineering, takes "production" and "benefits" as the guidance, and focuses on "guarantee quality, control risks, optimize operation, increase production, and improve efficiency", and conduct planning, drilling implementation, and fracturing gas testing.

Geologists changed their research thinking from “breaking one piece and developing one piece” to “overall evaluation and construction, three-dimensional development, and step-by-step implementation”.

"New method opens up a new situation"

The gas reservoir personnel re-understood the old clastic rock area of ​​Longfeng Mountain, and deployed the potential tapping adjustment well North 201-20HF well in the area where the Yingcheng Formation IV-4 small-layer reserve control was not used.

Drillers use the measurement-while-drilling system to match the stable and long composite directional drilling tool assembly to ensure that the wellbore is drilled steadily near the centerline of the target frame with a deviation of 84.

The production and construction of wells such as Bei210-4HF and Bei218-3HF, implement project management systems, and implement the whole process team management by geological, engineering, and gas production technicians, and the four stages of design, construction, blowout and production in the whole process.

Combined with changes in the fluid properties of condensate gas reservoirs, a pressure-controlled flowback system is adopted after fracturing, and the work system is optimized and adjusted, the current production and pressure of the gas well remain stable.

　　"New Technology Leads New Breakthrough"

　　For a long time, in the field survey process, due to the difference between the actual wellhead and the designed wellhead, we always "have to" adjust the well trajectory, and the final reservoir drilling encounter often fails to meet the geological requirements.

　　Affected by the cold weather in the northeast, fracturing operations have always had a tradition of "closing" in winter.

　　(Ren Xianjun)