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From January to June this year, the natural decline rate in the old area of Jianghan Oilfield was 5.
74%, which is 0.
78 percentage points lower than planned and 0.
65 percentage points lower than the previous year, which is the best level in the past decade
.
After decades of development, Jianghan Oilfield has problems such as difficulty in well pattern adjustment in old areas, difficulty in improving water quality along the way, and difficulty in upgrading development technology
.
This year, the oilfield has made continuous efforts to clarify the key tasks of controlling decline, improve the quality of oilfield water injection, and promote polymer flooding field trials, and make every effort to control the natural decline rate
Carry out in-depth water injection surveys
.
The number of wells, daily oil production, and the proportion of oilfields affected by imperfect injection and production, vertical strata contradictions, low-efficiency and ineffective water injection, and edge and bottom water and injected water propulsion, and the number of wells, daily oil production, and proportions are determined to clearly control the decline of key wells
The institute-factory joint office was initiated under the organization of the development department, worked together to find problems, worked together to formulate prescriptions, formulated fine injection and production adjustments, shut down wells and casing damaged wells, maintenance operations, and water quality management.
The Four-Five-Five" Control Decrease Plan
.
Strengthen the follow-up evaluation, establish a management account, and steadily promote the implementation of various measures
.
At present, 88.
Grasp the water quality of injection water to improve
.
Through sampling and comparison at the wellheads of each site, the direction and goal of improving the water injection quality of the oilfield are clearly defined
Strengthen the analysis of the factors affecting the deterioration of water quality along the route, optimize the 14 districts of the Bamian River, and create a fine water injection demonstration by optimizing the water injection pipeline network, optimizing the dosage of chemicals, and optimizing the water injection management
.
Strengthen monitoring and upgrade water quality, upgrade site monitoring to site + wellhead sampling monitoring, release monitoring bulletins every quarter, and issue early warnings to various oil production plants around water quality factors such as pipeline aging, pipe wall pollution, equipment status, and process operation.
Suggestions for improving water quality and improving chemical dosing schemes.
Up to now, key indicators such as suspended solids, oil content, and corrosion have been significantly improved
.
Actively promote the polymer flooding field test in Mian 1 block of Bamianhe Oilfield
.
Be responsible for experts, manage by dedicated personnel, discuss professionally, and publish a bulletin every week
(Xie Jiang, Wu Hua, Peng Xiaoming, Zhang Ning)
