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China Petroleum & Chemical News.
com.
cn At present, the Jianghan Oilfield Exploration and Development Research Institute has continuously improved the water quality and treatment efficiency of the reservoir injected water.
The water quality monitoring has covered 96.
37% of the treated water volume of the oilfield water injection system, the outbound water quality compliance rate is 86.
38%, and the wellhead water quality sampling rate is up to the standard.
It reached 76%, an increase of 12.
5 percentage points over the previous year
.
Water flooding to improve oil recovery is the main method for stable production in old oilfields, and the quality of injected water plays a key role in the development effect
.
For a long time, the Institute has focused on production bottlenecks such as pipeline corrosion and scaling, reservoir channel blockage, and formation pressure reduction.
Strengthen technical research and continuously optimize the plan
More than ten researches on water quality improvement and cost reduction and efficiency enhancement have been carried out around the core indicators of water quality
.
In Jianghan, in response to the corrosion problem in the Zhong 112 well area, a source treatment plan was proposed, and the reagent dosing node was changed
In Jingzhou, a study on the "Integrated Treatment Plan for the Honghuatao Well Area" was carried out and the water injection source was re-selected.
The daily water injection volume in the Honghuatao well area was increased from only 41 cubic meters per day to 114 cubic meters at the lowest point
.
These solutions (technologies) have effectively solved the bottleneck problem of water treatment in various oil fields and greatly improved the water treatment efficiency
Strengthen the cooperation between the factory and the hospital, and strictly implement the system
While strictly implementing the system of “regular inspection, regular notification, and regular early warning”, the research institute and various oil production plants have jointly studied and formulated the production site filters and tank cleaning, main line cleaning, shift station water quality monitoring, ledger management, etc.
Series system
.
Practice has proved that the institutional system strongly supports the water quality management of the water injection station
The Southern District Joint Station shortened the sediment cleaning cycle from one year to one quarter, and the wellhead water quality compliance rate was increased from 65.
3% to 77.
8%; Jianghan Mining strengthened the pipeline cleaning frequency, and the wellhead water quality compliance rate was increased from 67% to 75% before and after cleaning.
.
Strengthen the transformation of thinking and realize management improvement
In accordance with changes in the situation and the division of functions, the Institute has transformed from the former "labor service type" to "technical service type", and the oil production plants have changed from "passive monitoring" to "active detection"
.
On the one hand, the research institute assisted each oil production plant to establish detection technology, put forward specific opinions and suggestions on technical issues such as detection equipment and test methods, and realized the daily effective management of the water quality of all stations by each oil production plant
.
On the other hand, conduct quarterly spot checks on key water injection systems, random spot checks on remote sites, and release water quality bulletins on time, summarize the good practices of various oil production plants, provide early warnings of existing key indicators, and clarify the next key upgrade sites and wells.
