RU2195551C1 - Method of optimization of producing processes in oil-gas well - Google Patents

Abstract

FIELD: oil and gas producing industry. SUBSTANCE: method includes lowering of autonomous instrument into well, short-time conduction of producing process up to attaining the stable run of process that takes from several minutes to several hours. Upon attainment of stable producing process, it is discontinued autonomous instruments are withdrawn to surface, or information is taken from instruments without their lifting to surface (by information transmission through pipe string, or through fluid). Degree of process optimization is evaluated by indications of instruments. Should instrument indications be positive, process is continued, otherwise, short-time stages of producing process are repeated alongside with used methods up to attaining of optimized producing process. EFFECT: higher efficiency of method due to use of indications of autonomous instruments for correlation of conducted process.

Description

 The invention relates to the oil industry and can be used to optimize technological processes in an oil and gas well.

 A known method of optimizing technological processes, including measuring the parameters of technological processes by geophysical instruments lowered into the well on a cable, and taking into account their readings to correlate the modes of technological processes (S. S. Intenberg, TD Dakhkilgov. Geophysical studies in wells. M .: Nedra, 1982, p. 286-289).

 The disadvantages of the known optimization method are the limited possibilities of using devices on the cable, for example, during drilling and oil production, since the cable is an obstacle to pipes and pumps; if necessary, long-term measurements have to be at the well and operators and elevators.

 These disadvantages are eliminated in another known method of optimizing technological processes, adopted as a prototype.

 A known method of optimizing technological processes in an oil and gas well according to the prototype includes measuring the parameters of technological processes with autonomous devices and taking their indications into account when assigning parameters to identical technological processes (V.N. Vasilievsky, A.I. Petrov. Technique and technology for determining the parameters of wells and reservoirs. M .: Nedra, 1989, p. 209-211).

 The disadvantage of the prototype is that the obtained readings of stand-alone devices after the implementation of technological processes can no longer affect these processes. These indications can be taken into account for the correlation of processes only in future technologies.

 The objective of the invention is to remedy this drawback.

 The technical result achieved by using the proposed invention is the use of readings of autonomous devices for correlation of the same technological process in which measurements are performed.

 The specified technical result is achieved by the fact that in the method of optimizing technological processes in an oil and gas well, including measuring the parameters of technological processes by autonomous devices and taking their indications into account when assigning parameters to identical technological processes, according to the invention, after the initial short-term stage of the technological process is completed, the process is stopped before it proceeds they take autonomous devices to the surface or take information from them without of the removal of devices, according to the readings of the devices, they evaluate the degree of optimization of the technological process, if the results are positive, they continue to carry out the technological process, if the results are unsatisfactory, they are scheduled to adjust the parameters of the technological process and perform its second short-term stage until its steady flow, then the process is stopped, autonomous devices are removed to the surface or they take information from them without lifting the devices, according to the readings of the devices after decryption I evaluate the degree of process optimization and quality of work and depending on the results make the decision to continue or discontinue the process.

 Stopping the process at the initial stage of its execution and obtaining information about it allows you to adjust the parameters of the process for its optimization.

 Repeatedly performing short-term steps with obtaining information about them allows you to adjust the processes until they are fully optimized in relation to oil or gas production.

 Using different methods of quickly extracting information from stand-alone devices after stopping the process by lifting the stand-alone devices to the surface or transferring information from stand-alone devices through a column or by liquid also allows you to quickly optimize the process depending on its conditions.

 The simplicity of the proposed method does not require a graphic image.

 The proposed method is as follows.

 Before starting the technological process of drilling, or developing a well, or extracting oil from it, or repairing, or intensifying, stand-alone autonomous devices ready for operation are lowered into the well and installed in the planned places.

 Then begin the short-term execution of the technological process before the onset of a steady process. It takes time from a few minutes to several hours.

 Once a steady flow of the technological process is achieved, it is stopped, autonomous devices are removed to the surface or information is taken from them without lifting the devices (by transmitting information through the column, by liquid). According to the testimony of the devices, the degree of optimization of the process is evaluated, with positive results, the process is continued, with unsatisfactory results, the short-term stages of the process and the above techniques are repeated until the optimization of the process is achieved.

 Thus, optimization and control of the performed technological process are achieved, in contrast to the prototype, where only future technologies can be optimized and without monitoring their progress.

Claims (1)

 A method for optimizing technological processes in an oil and gas well, including measuring the parameters of technological processes with autonomous devices and taking their readings into account when assigning parameters to identical technological processes, characterized in that after the initial short-term stage of the technological process has been completed, before the process proceeds steadily, the process is stopped, autonomous devices are removed to the surface or they take information from them without lifting the instruments, according to the readings of the instruments they evaluate the degree of optimization of the process, with positive results continue to carry out the process, with unsatisfactory results, they plan the adjustment of the parameters of the process and perform its second short-term stage until its steady flow, then the process is stopped, stand-alone devices are removed to the surface or information is taken from them without lifting the devices, according to the readings of the devices after decryption, the degree of optimization of the technological process and the quality of at work, and depending on the obtained results make the decision to continue or discontinue the process.