First, do a good job in the daily management of our workover operation.
1. At the same time, we should be strict with ourselves in our work, urge and require all construction teams to carefully prepare all workover data, strictly control the construction quality of working procedures, put an end to passive operations, and improve the efficiency of workover operations. Prepare the completion summary and report the construction data in time. Through my work in recent years, I have deeply realized the importance of quality work in workover operations.
2. In view of the employees' weak knowledge of workover technology, targeted technical training is provided. Combined with the actual situation of our team, we will focus on training employees' practical operation ability and explaining the knowledge of safety prevention and construction risk identification. It meets the needs of safety and skill operation of construction personnel. Conduct skill education for employees by means of one question per well, one lesson per week and one exam per month; Through technical knowledge learning and on-the-job training, the technical quality and practical skills of all employees, especially foreign employees, have been greatly improved.
3. While doing a good job, actively cooperate with the team leader to do a good job in safety and environmental protection of the team, collect construction information in time, arrange the operation of personnel and vehicles reasonably, and ensure the continuous workover operation.
Second, carefully prepare the construction technology and technical measures
Conduct joint review on the engineering design of the construction survey well, make clear the construction data, tasks, objectives and possible risk factors of the construction well, and determine the corresponding technical and safety schemes according to the well conditions and operation tasks. Such as high pressure wells, high oil and gas wells and high risk wells. It is necessary to formulate blowout prevention, gas prevention and other technologies and safety schemes suitable for well conditions. Especially for complex wells (such as casing broken wells, sand stuck wells, casing string wells, abandoned wells, etc.). ), in addition to serious measures for joint review, but also on-site command and supervision, so as to achieve meticulous organization and careful construction, and successfully completed the construction work:
Three, study hard all kinds of technical and management knowledge, do a good job.
In view of the double-engine operation of Xi Shi team in the underground bidding at the beginning of this year, as I am in charge of the overall technical work, I have earnestly completed the work arranged by the superior leaders and team leaders. When encountering the construction operation of complex new technology wells, I strictly organize the construction and coordination at the site.
According to the process standards, the librarians should be strictly educated in data collection and training, strictly controlled in quality, strictly implemented in the operation of the four systems, improved in operation quality, and trained in safety, well control and quality, and supervised and inspected. Cooperate with the team leader to do a good job in the construction site and strive to improve their professional level. I make full use of my spare time to learn all kinds of complex well process design and workover projects, and seize the time to learn professional business knowledge and computer knowledge to improve my professional and technical level. Strive to complete the writing of QC papers and technical papers this year. In the continuous study and exercise, I strive to improve my technical theory level, technical problem solving ability and management ability.
Fourthly, difficult and complicated well technology.
Xishi operation area belongs to a new development block. The conditions of deep wells in this block are complex, and there are wells with various technologies. Before repairing, carefully collect the well history of this well, and carefully prepare the construction design with reference to various technical standards. In the process of construction, it is strictly required to organize the construction work of various technologies on site. For example:
1. Well SH3058 (hole filling and layer modification) constructed this year: Well SH3067 in the same layer of this well has good oil recovery effect after layer modification. This layer carries out exploration and exploitation and secondary cementing in the operation area. Working procedures of this well: killing well, lifting sucker rod, releasing stuck fish, lifting pump, drifting well, washing well, lowering bridge plug, electric edge, perforating, squeezing chemicals, lowering structure, pressure test, pipe string inspection, squeezing ash, lifting structure, drilling plug, pressure test, bottom hole exploration, ground wax removal, drainage, induced injection and displacement, and completion. The construction date is from 4. And the measures for the construction personnel disclosure work. In addition to normal working procedures, we will personally adhere to shift work, strictly control the quality of each process, and conscientiously implement various process standards on site. Ensure that each process is qualified once, so that the well can complete the work safely with good quality and quantity during May Day.
2. Well 2.L3025 (water plugging by squeezing): Due to the serious water production in the current horizon of this well, the upper horizon does not produce liquid, and the water production horizon is blocked. The well is reported to the operation area for decision after the first trial squeezing test (bridge blocking) in construction. After receiving the clean water from the 4.3m^3 700 cement truck, open the casing, and try to squeeze the tubing into the 3 179.5m-3 182.5m interval, with a pump pressure of 8-9MPa and a time of 15min (65438).
35), the displacement is 0.28 m 3/min, and there is no casing overflow (no pipe string between layers). After reporting to the production department in the operation area, decide the sealing operation. Connect a 700 cement truck, squeeze the plugging agent 8m^3 with specific gravity of 1.7g/m 3 into the tubing, and then squeeze all the plugging agent in the tubing with 9.5m^3 displacement fluid: 3 179.5m-3 182.5m interval, but when the displacement fluid is 5m^3.
Lift the intubation structure, and then carry out well washing operation. After solidification for 48 hours, the plugging layer is qualified after drilling and plugging. This operation made me understand that when plugging a layer with serious water leakage, the amount of liquid squeezed in should not be too much, which would cause the interlayer pressure to be suppressed and make the work impossible.
3. Salvage construction of well SN8156: During the production test of this well, the instrument combination fell into the bottom of the well, and the fish dropped were collecting umbrella, densimeter (with CS 137 radioactive source) and weighting rod. The total length is 3 meters. Because the instrument is small (with CS 137 radioactive source), the operation is carried out in strict accordance with the requirements of the salvage work plan, instrument salvage process design and site construction plan issued by Quasi-Oil Company. Firstly, the well is closed for washing, and the returned liquid is discharged as required. Raise all structures in the well at the speed limit (in order to keep the pressure balance in the well, lift the pipe string and fill the whole process with liquid). After wax removal, lower the fishing sleeve structure to the fish top position. After the large-displacement fish top is cleaned, level the 62mm 1 N80 oil pipe with a speed limit of * 9.54m. When it reaches the fish top of 2,660.03m, slowly lower the rotary pipe string with a lowering load of 27t-26t-24t-23t-20t-15t-0t. Lift and lower the pipe string, rotate the pipe string, and repeat fishing for three times. When all structures in the well are lifted at a limited speed, and the salvage objects will come out of the wellhead, the personnel of the on-site emergency group of the Quasi-Petroleum Technology Division shall be responsible for lifting the salvage tools and instruments out of the ground. The operator (wearing protective clothing) will close the wellhead gate and leave the well site. Other on-site personnel will leave the site for 20 meters. After the instrument is safely put into the lead tank and left the well site, the on-site inspector of the quasi-petroleum technology department will inspect the wellhead, on-site facilities, equipment and tubing. After that, the on-site inspectors of the quasi-petroleum technology section confirm the success of fishing, and then proceed to the next step.
Verb (abbreviation of verb) The popularization and application of new technology and new technology.
Seriously adhere to the purpose of innovation and efficiency, cost reduction and efficiency improvement, and vigorously promote the application of new processes and technologies. Details are as follows:
1. In order to solve the problem that the sand washing fluid can't return to the ground due to formation leakage in sand washing construction and reduce the secondary pollution of the sand washing fluid to the formation, the sand washing process is changed to the wellbore sand fishing process. Sand pump does not need pump truck to wash sand circularly, but it can suck sand into the tubing by moving it up and down, and bring it to the ground by lifting the tubing, so as to clean the sand in the wellbore. With the long-term exploitation of oil fields, the permeability of strata has changed, and the underground construction technology is constantly being renovated. The field application of sand pumping technology by sand pumping pump has achieved good construction results. The application of this technology has opened up new ideas for our managers engaged in underground operations, which is helpful to broaden our ideas and methods to solve problems in future practice. Through field application, the sand pump has solved the construction problems of formation leakage and sand washing, which can be popularized and applied in sand washing construction of similar wells in the future.
2. New investment and application of horizontal wells:
In recent two years, the new production of horizontal wells in Xishi operation area has achieved certain results. This year, our team built three new production wells, SNHW825, SNHW826 and SNHW829, in which SNHW826 was tested by pressure gauge structure (cable passing through), and then induced injection of liquid nitrogen was carried out, and the oil production effect was good.
With the continuous exploitation of oil fields and the continuous innovation of new processes and technologies, I will conscientiously sum up good working methods in my future work, understand and master the application of new processes and technologies, and make my own contribution to the development of oil fields and enterprises.