41results about How to "Cost reduction measures" patented technology

The invention relates to a three-in-one acidification unblocking agent for oil well unblocking and an application method thereof. The acid liquid formula is prepared from the following ingredients inpercentage by weight: 18 to 26 percent of polyorganic acid, 15 to 20 percent of precipitation inhibitors, 5 to 8 percent of iron ion chelating agents, 4 to 7 percent of anti-swelling agents, 6 to 9 percent of corrosion inhibitors, 3 to 6 percent of hydrogen fluoride, 2 to 5 percent of demulsifiers, 3 to 6 percent of acid sludge inhibitors, 3 to 6 percent of water locking prevention agents and thebalance of clean water. During the preparation, all ingredients are added into an anti-corrosion reactor according to the weight parts; the stirring is performed for 40 to 50 minutes at the normal temperature; a finished product is obtained after the uniform dissolution. The main functions of pre-acid, host acid and post-acid in the conventional acidification liquid are integrated; inorganic scales such as mud filtering cake, calcium matters and iron matters and organic scales such as colloid matter and asphalt matter in the stratum can be effectively dissolved; the secondary settlement damageon a reservoir cannot be caused. The three-in-one acidification unblocking agent can also be used as the acidification unblocking agent for pressure reduction and injection increase of an oil field water injection oil.

The invention relates to a long-span multi-section combined truss roof structural system and a construction method thereof. The structural system comprises structural columns and a roof truss, whereinthe structural columns include middle columns and side columns; the roof truss comprises main trusses and secondary main trusses, the main trusses comprise side main trusses and side main trusses, the main trusses are formed by splicing main truss units, and the head end surface and tail end surface of the main truss units are oblique end surfaces and are parallel to each other; and column connecting brackets which used for connecting the roof truss and are adapted to components of the corresponding roof truss are arranged in node regions of the structural columns. According to the construction method, the roof truss and the structural columns are sectionally lifted by virtue of the cooperation with a temporary reinforcing measure. Under the condition that the construction stress is met,the structural system is improved, the construction procedure is optimized, the construction cost is saved, the mounting efficiency is improved, and the measure cost is saved.

The invention discloses a bathroom inverse bank one-time forming template supporting method and belongs to the technical field of bathroom inverse bank construction. Firstly, a reinforced bar supporting framework (1) is vertically fixed to a stirrup and a main rib of a one-time structure beam, then, an inverse bank side template (2) is installed at the corresponding position, an inverse bank lower square pillar (4) is installed between the inverse bank side template (2) and the reinforced bar supporting framework (1) so that the reinforced bar supporting framework (1) and the inverse bank side template (2) can be fixed firmly, and the dimension of a lower opening is ensured; and finally, a batten (3) for fixing an upper opening of an inverse bank and an inverse bank upper square pillar (4) are used for reinforcing to fix the size of the upper opening of the side template (2), then the template can be reinforced, accordingly, an inverse bank template is fixed, and the section size of the inverse bank is ensured. The bathroom inverse bank one-time forming template supporting method has the advantages of not occupying much space and being capable of recycling waste reinforced bars. The degree of bonding between inverse bank concrete beams and plates is ensured, the construction progress can be accelerated, and the cost of measures can be reduced.

The invention discloses a self-adaptive steel truss girder gravity center and installation inclination angle change hoisting lifting appliance and a construction method. The main structure comprises alifting appliance main beam, a movable pulley assembly, an oil cylinder, a fixed base, a suspender assembly, a high-strength finish rolling thread steel A, a high-strength finish rolling thread steelB, a high-strength finish rolling thread steel bar matching nut and a cotter pin; the lifting belt assembly is located on the lifting appliance main beam, and the movable pulley assembly is located on the lifting appliance main beam; the two sides of the movable pulley assembly are correspondingly provided with oil cylinders, the high-strength finish-rolled threaded steel A and the high-strengthfinish-rolled threaded steel B penetrate through the suspender assembly and the corresponding high-strength finish-rolled threaded steel rod matched nut correspondingly. According to the gravity center and the hoisting lifting appliance and the method, after being improved, the change of the center of gravity of the large-section hoisting of the structural object can be effectively applied, the lifting appliance is reduced, the measure cost is reduced, the construction process is simple and rapid, the installation difficulty is reduced, the total construction period is saved, and the measure cost is greatly reduced.

The invention discloses a tunnel construction template arch centering trolley guiding rule positioning method, which comprises the following steps: in the advancing direction of a tunnel under tunneling construction, according to the process requirements, parallel position lines needing guiding rules to be installed are symmetrically determined by being parallel to the midline of the tunnel under the tunneling construction; a plurality of steel piles are distributed on the position lines, and are fixedly connected by adopting angle iron, thus forming tunnel construction template arch centering trolley positioning guiding rules; installation calibration contacts are arranged on the left and right sides of a template arch centering trolley; by virtue of the gap between the calibration contacts and the positioning guiding rules, the position of the template arch centering trolley in the tunnel under the tunneling construction is determined. According to the positioning method disclosed by the invention, for dynamic change errors generated after track installation, fixing errors of traveling wheel grooves and balance errors generated by an arch centering trolley mechanism, when the arch centering trolley travels or is fixed, process control and master control can be favorably realized; the travelling dynamic state and positioning in fixation of the arch centering trolley are easily observed and controlled, thus the work efficiency can be improved, and the measure cost is low.

The invention discloses a tunnel construction arch center formwork correcting method. The method comprises the steps that an arch center is moved and positioned in a tunnel; hydraulic electromagnetic combination distribution valves of a pump station provided with an intelligent numerical control computer platform on an arch center bogie are connected with hydraulic jacking oil cylinders respectively; a sensor on each hydraulic jacking oil cylinder is connected with the intelligent numerical control computer platform; a preset extending value and thrust data of each hydraulic jacking oil cylinder are determined and input, the hydraulic pump station is started, and a formwork on the tunnel construction arch center is corrected; after the arch center bogie moves forwards to a next station, the formwork on the tunnel construction arch center is corrected this time according to the data, memorized and stored in a computer, of the previous station. During arch center formwork correction and fixing, process control and master can be achieved for error gaps produced during arch center formwork installation, gap errors of a concrete arch wall which is cast again and comprehensive errors produced during arch center formwork installation, and the accurate control and correction effect on the arch center formwork on the bogie is achieved.

The invention discloses an assembled ultra-deep foundation pit ramp system and a construction method thereof. The system includes ramp structures and vertical support structures. Among them, the ramp structure is composed of the first-level ramp and the second-level ramp connected to the transition platform through rollers and slideways, the first-level ramp and the support beam are connected through pin shafts, and the second-level ramp and the friction plate are connected through rollers and slideways. Connection; the vertical support structure is composed of concrete-filled steel tube columns, stabilizing braces, tie rod jacks, supporting trusses, control lines, jack control boxes, and supporting flanges; the four concrete-filled steel tube columns are fixed by supporting trusses and stabilizing braces, and A rod-type jack propulsion system is set in the support truss to control the transition platform up and down, thereby adjusting the slope of the ramp. The system and method of the present invention avoid problems such as drainage and anti-skid of earthwork slopes in foundation pits, affecting vehicle excavation safety and efficiency, construction progress, and the like, and reduce the cost of slope measures.

The invention provides a fire flooding producing well layering gas channeling plugging technology. The fire flooding producing well layering gas channeling plugging technology comprises the steps that(1) after a fire flooding producing well layering gas channeling plugging pipe column is downwards arranged at a design position, a certain amount of gel composite is fed into an oil layer from an oil pipe; (2) a certain amount of high-strength gel particles are further fed from the oil pipe; and (3) an inorganic sealing agent channeling plugging system is injected, clear water is injected in a positive flow displacing manner, and then the clear water is displaced excessively. The fire flooding producing well layering gas channeling plugging technology and the adopted pipe column solve the problems that in the prior art, the plugging effect is not ideal, construction procedures are complicated, the construction time is long, and the operation cost is high; and operation procedures and cost can be effectively reduced, and the measure effect and the production efficiency are improved.

The invention discloses an analysis method for influencing factors of complex fracture expansion in the shale fracturing process, which includes the following steps: firstly, analyzing the geological characteristics of the target reservoir; The corresponding solution method calculates the net pressure of different expansion modes, and inverts the fracture parameters under different expansion modes; finally, the fracture extension law and the corresponding pressure under various factors that affect the dynamic expansion of shale fractures Response characteristics were studied to clarify the crack dynamic expansion law and main controlling factors under different construction pressure responses. The present invention can clearly grasp the dynamic expansion behavior of fractures, realize the diagnosis and analysis of different typical construction curves in shale gas fields, and is beneficial to identify various fracturing change events as early as possible, judge the fracture shape trend and construction abnormal points in advance, and adjust fracturing optimization in time Design, avoid ineffective transformation, reduce the cost of measures, thereby improving the quality and effect of fracturing.

The invention provides a cooling type oil-based selective water plugging method. The Cooling type oil-based selective water plugging method comprises the steps that heavy oil is preheated, so that thefluidity of the heavy oil is restored, and the heavy oil is injected into the formation; after squeezing injection of the heavy oil is finished, displacement is conducted with hot water, the heavy oil is totally squeezed into the formation, heat transfer at immediate vicinity of wellbore is conducted with cold water, so that the temperature of the heavy oil is reduced to the turnover temperatureor below, and plugging is formed. The viscosity of the heavy oil in a water layer can keep basically unchanged, while the viscosity and the flowback resistance of the heavy oil in an oil layer are reduced because the heavy oil in the oil layer makes contact with thin oil, and the selective aim of water plugging without oil plugging is achieved. The squeezed crude oil can be slowly produced from the formation finally, and the measure cost is low.

The invention is suitable for the technical field of wall engineering, and provides a post-cast strip wall formwork structure and an outer wall post-cast strip advanced water stop construction method. The post-cast strip wall formwork structure comprises supporting assemblies, inner side formworks, embedded steel plates and steel cover plates, outer wall concrete is arranged on the left side and the right side of a post-cast strip, the supporting assemblies are fixedly arranged on the outer wall concrete on the two sides, and fast and easy closing-up nets or fish scale water stop pieces are arranged between the post-cast strip and the outer wall concrete; the inner sides of the embedded steel plates are welded to the supporting assembly and fixedly arranged on the outer side face of the outer wall concrete, and the embedded steel plates are located on the two sides of the post-cast strip. The inner sides of the two ends of the steel cover plate are welded to the outer sides of the embedded steel plates located on the two sides of the post-cast strip correspondingly, and the steel cover plate seals and covers an outer opening of the post-cast strip. And the waterproof layer is laid on the outer sides of the concrete and the steel cover plate. The structure is simple, the wall manufacturing period is greatly shortened, the labor cost is greatly saved, the problems of early closing difficulty and measure cost of the basement outer wall are solved, the closing progress is accelerated, and the construction period is shortened.

The invention discloses a sealing agent for thermal recovery of heavy oil, which is made of the following raw materials in percentage by weight: 10-30% of water glass, 0.5-3% of ethyl acetate, 0.3-1.3% of ammonium chloride, and 0.005% of aluminum citrate -0.015%, EDTA or EDTA salt 0.01-0.03%, the balance is water. The gelation time of the sealing agent of the present invention is 4-12 hours. After gelling, it can withstand high-temperature steam at 300°C. It can be used in conjunction with the suspended particle type sealing agent, and is used for the implementation of some thermal recovery wells with serious steam channeling. Deep channel sealing can enhance the channel sealing effect; especially it can be used in heavy oil thermal recovery sand control wells, which can directly seal channel in the presence of sand control layers or sand control tools, reducing construction costs and having good results.