9 results about "Oil field" patented technology

The invention relates to special ultrasonic dirty oil sludge deoiling equipment for an oil field. The special ultrasonic dirty oil sludge deoiling equipment comprises an ultrasonic dirty oil sludge separation system (1) and an oil-water and solid-liquid separation system (2), wherein the ultrasonic dirty oil sludge separation system (1) can convey dirty oil sludge to an ultrasonic dirty oil sludge separation tank (1-1); an ultrasonic transducer (1-4) fixed on the ultrasonic dirty oil sludge separation tank (1-1) is used for carrying out ultrasonic vibration on dirty oil sludge in the ultrasonic dirty oil sludge separation tank (1-1); crude oil is separated from the dirty oil sludge subjected to ultrasonic vibration by the ultrasonic transducer (1-4) through the oil-water and solid-liquid separation system (2). By adopting the equipment, the problems of high energy consumption, environment pollution and complex process in the process of separating crude oil from the dirty oil sludge in the prior art are solved and the equipment has the characteristics of high dirty oil sludge treatment speed, high efficiency, high flexibility and high mobility.

The invention relates to the technical field of oilfield development, in particular to a method for establishing a path planning model for comprehensive utilization of gas, water and electric heating agents in a heavy oil reservoir. The method comprises the following steps: step 1, constructing a resource utilization path structure model of each medium; step 2, establishing a path relation model for saving energy consumption, saving cost, increasing oil production and path structures and developing end values after the resources of the media are utilized; step 3, collecting sample data of each medium resource utilization path, and solving a path relation model; step 4, establishing a comprehensive utilization path planning model of each medium resource with maximized target benefit; step 5, establishing constraint conditions of the comprehensive utilization path planning model; and step 6, obtaining a comprehensive utilization path planning model. According to the method, the planning problem of the comprehensive utilization path of multiple media of the gas, water and electric heating agent is solved, the selection of the optimal utilization path of each medium is realized, and the purposes of maximizing resource utilization, saving energy consumption, saving cost and recycling economic benefit are achieved; the method is of great significance in improving the resource utilization capacity and level and the development management level in the thick oil old oil field development process.

The invention belongs to the technical field of oil field wellhead devices, and particularly relates to a single-pipe thermal recovery wellhead device. The single-pipe thermal recovery wellhead device comprises a first branch pipe, a second branch pipe and a four-way pipe, the first branch pipe is fixedly installed on the lower portion of the side edge of the four-way pipe, and the second branch pipe is fixedly installed on the upper portion of the side edge of the four-way pipe. A fixing clamping piece used for butt joint is fixedly installed on the outer surface of the side edge of the second branch pipe, and a rotary fixing piece used for adjusting the angle is arranged in the middle of the four-way pipe. According to the single-pipe thermal recovery wellhead device, a user can install combined clamping plates of corresponding models on a lower clamping cover and an upper clamping cover according to the calibers of pipelines, so that the pipelines of different calibers can be in butt joint and fixed, and the flexibility of the single-pipe thermal recovery wellhead device during installation and operation is improved; and by the arrangement of the rotary fixing piece, a steering adjusting structure can be formed in the middle of the four-way pipe, so that the using angle between the first branch pipe and the second branch pipe is adjusted, the single-pipe thermal recovery wellhead device is provided with the steering adjusting structure, and the using flexibility of the single-pipe thermal recovery wellhead device is improved.

The invention discloses an offshore oilfield micro-fracturing injection time calculation system and method, and the method comprises the steps: modeling: collecting modeling parameters, and building aseepage and rock mechanics mathematic model; a simulation injection step: simulating injection of the micro-fracturing fluid, setting N1 injection time periods, and generating N1 post-fracturing fracture networks; an example execution step: executing the prediction example to obtain the discount yield increase of the well group; and a selection step: judging whether well group discount yield increase is in a descending trend or not, and selecting an injection time period corresponding to the after-pressure fracture network in the descending trend at first as injection time. By simulating theinjection time periods with different lengths and monitoring the well group discount yield increase of a plurality of post-fracturing fracture nets in real time, the injection time period corresponding to the post-fracturing fracture net with the well group discount yield increase reaching the first descending trend is finally selected as the optimal injection time. The optimal injection time is obtained, so that the optimal fracture network form is obtained, and the injection capacity of a single well is improved as high as possible under the condition that later water channeling is not caused.

The invention discloses a fire extinguishing device of an oil field heating furnace. The device comprises a gas fire extinguishing medium generator serving as a fire extinguisher, a control circuit, a main pipeline for conveying a gas fire extinguishing medium and a fire tube fire extinguishing unit, the fire tube fire extinguishing unit comprises a branch pipeline and an electric control valve, an inlet of the main pipeline is connected with a gas fire extinguishing medium outlet of the gas fire extinguishing medium generator, an inlet of the branch pipeline is connected with the main pipeline; the electric control valve is in series connection with the branch pipeline, an outlet of the branch pipeline is connected with a fire tube of the oil field heating furnace; and the control circuit comprises a controller, and the control end of the electric control valve is connected with the control signal output end of the controller. Once liquid leakage of the fire tube of the oil field heating furnace is found, the control circuit starts the gas fire extinguishing medium generator, the gas fire extinguishing medium is conveyed into the fire tube through the main pipeline and the branch pipeline, and fire disasters caused by liquid leakage in the fire cylinder can be rapidly extinguished.

The invention relates to the technical field of protective oil tanks, and discloses a protective oil tank for an oil field maintenance field-acquisition site and a manufacturing method for the protective oil tank. The protective oil tank comprises an oil tank body, wherein the oil tank body comprises an upper tank body and a lower tank body; the bottom of the upper tank body is provided with a groove which is inwards sunken; the top of the lower tank body is provided with a lug which is downwards convex; the lug is connected, in an engaged manner, to the groove; a construction frame is mountedabove the oil tank body; and the construction frame comprises a standing pond arranged inside the construction frame, a reserved hole formed inside the construction frame, and a vertical plate arranged between the standing pond and the reserved hole. Through detachable structures of the upper tank body and the lower tank body, the upper tank body and the lower tank body are relatively convenient;the upper tank body is of a circular-ring-shaped structure which can be connected, in an engaged manner, to a cylindrical structure of the lower tank body, so that a mounting process is simple; and the standing tank facilitates operation of a maintainer; and the lug is connected, in an engaged manner, to the groove, so that the upper tank body and the lower tank body are connected firmly.