49results about How to "Improve production timeliness" patented technology

The invention relates to a method for injecting oil displacing agent into an oil reservoir to improve oil recovery by using fracturing. The method for injecting the oil displacing agent into the oil reservoir to improving oil recovery by using fracturing mainly solves the problems of large viscosity loss and low injection efficiency during the injection process of the existing three kinds of oil reservoir oil displacement agents. The method for injecting the oil displacing agent into oil reservoir to improving oil recovery by using fracturing is characterized in that (1) dividing a target stratum to the well fracturing section; (2) determining a half fracture length for the well fracturing section of the target stratum; (3) determining the oil displacement agent dosage for the well fracturing section of the target stratum; (4) determining a construction displacement the well fracturing section; (5) determining construction procedure of a pumping injection; and (6) mixing and injecting the oil displacement agent. The method for injecting the oil displacing agent into oil reservoir to improving oil recovery by using fracturing can greatly improve the injection efficiency and reduce the displacement efficiency loss, thus greatly improve the recovery efficiency and single well production.

The present invention uses calcium base leituoshi stone ore as raw material, and adopts semi-dry artificial modification process including the steps: breaking clay mineral, adding 1%-5% sodium salt, uniformly mixing them, water-spraying, shearing, pressing, piling and ageing for 7-10 days, drying so as to obtain modified leituoshi stone. Said invention is simple in production method, convenient for operation, less in dosage of modifying agent and low in energy consumption and cost. The phi-600 reading value of drilling fluid prepared with modified leituoshi stone is greater than or equal to 60, mud-making rate is greater than or equal to 18 cu.m/t, filter loss is less than or equal to 13.5 ml and dynamic shear force is less than or equal to 1.2XPVPa. It is superior to sodium base bentonite in all the properties, and is applicable for drilling in the fields of petroleum industry, natural gas engineering, geologic drilling engineering and building engineering, etc.

The invention discloses an automatic balance-adjusting beam-pumping unit and an automatic balance-adjusting method. An automatic balance-adjusting device is arranged on a crank of a pumping unit; the automatic balance-adjusting device comprises a fixed balance block, a left movable balance block, a right movable balance block, a balance motor and a right-angle speed reducer, wherein the fixed balance block is connected with the crank through a bolt, and the fixed balance block can slide on the crank in the length direction of the crank; the right-angle speed reducer is connected with the balance motor, and the right-angle speed reducer is mounted on the fixed balance block; output shafts are arranged on the two side surfaces of the right-angle speed reducer, and have opposite rotating directions; the left movable balance block and the right movable balance block are mounted on the output shafts on the two side surfaces of the right-angle speed reducer respectively. The balance motor is started up, the balance motor transmits power to the right-angle speed reducer, the right-angle speed reducer drives the left movable balance block and the right movable balance block to rotate, and the balance of the beam-pumping unit is adjusted by changing the gravity center positions of the left movable balance block and the right movable balance block.

The invention relates to a pollution-free well workover process for an oil field, which is suitable for negative-pressure well workover operation in an oil-water gas well of the oil field. At present, in the well workover operation process of the oil field, a ground pump is usually used for pumping fluids, such as clear water, and the like into the well from the mouth of the well, solid particulate matters, such as scales, sands, scrap iron and the like are taken out from the bottom of the well by adopting positive cycle or reverse cycle flushing to achieve the purposes of washing the shaft, removing sand burying and refloating downhole junks; however, in the mid-later period of waterflooding extraction of the oil field, the interlayer conflict is increased, and stratum absorption wells are increased to cause the pollution to the stratum. The invention aims at providing a well workover process which has the advantages that ground pump cycle is not needed in the operation field, no stratum pollution exists in the well workover process, the construction cost is saved, the production ageing is improved, and the pollution to the environment during working is reduced.

The invention realtes to a preprocessing technology for processing integral key shaft, accomplished by the following steps: induction annealing area of integral key shaft using electromagnetic induction to be heated to above A[C3] over 50-80 degree for incubation of 1-2 hours, namely slowly cooling to 300 degree in asbestos drum and then air colling to narmal temperature. The surface hardness can be greatly decreased by surface induction annealing treatment, at the same time the uniformity of hardness is increased and the grain can be refined (grain size 8), and the uniformity of structure can be advanced, therefore the processability of integral key shaft can be greatly improved, the process quality thereof can be advanced, the tool life is increased by more than 5 times, the processing cost is saved, and the production effciency and economy benefit can also be obviously generated. Compared with modulator procedure, the said technology saves proscessing cost and greatly increases production timeefficiency.

An electric submerged pump-gas lifting method for recovering oil by oil well features that a gas lifting valve is installed to the oil pipe above the electric submerged pump and the oil pipe for said electric submerged pump has the Y-shaped structure. As a result, the gas lifting method and the electric submerged pump method can be used simultaneously or individually for recovering petroleum.

The invention relates to a method for reaming by detonation of a detonating cord under a well. The method comprises the following steps: sequentially mounting a pilot reamer, an explosion reamer and avariable-diameter hole trimming device at the lowest end of a drill stem from bottom to top; enabling the drill stem to rotate and descend simultaneously, and when the drill stem descends until the explosion reamer is completely flush with the height of a predetermined reaming section, enabling the drill stem to stop descending and rotating; opening a mud pump and pressurizing same to the set detonation pressure to detonate the detonating cord of the explosion reamer, wherein shock waves generated by the explosion act on rocks of a well wall to cause stratum rocks on the entire periphery of this section to be crushed and fractured, thereby achieving reaming; opening the mud pump to the construction displacement and taking rock debris generated by the explosion reaming out of the well; enabling the drill stem to continuously descend, so that the variable-diameter hole trimming device reaches the reaming section to trim the well wall of the reaming section; and pulling the drill stem out of the well, putting a hole diameter logging unit into the well to detect the hole diameter and determining whether predetermined reaming requirements are met. By adopting the method, the reaming speed is high, risks under the well are low, the phenomena of repeatedly pulling a drill out of the well and putting the drill into the well is avoided and the well drilling efficiency is improved greatly.

The invention discloses a workpiece conveying, positioning and clamping combined automatic line. The workpiece conveying, positioning and clamping combined automatic line comprises a lathe, a floatinglifting adjustment conveying roller wheel system, a workpiece rotary lifting righting wheel system, a workpiece conveying positioning clamping limiter, a workpiece duct righting clamping balancer anda workpiece storage rack; the floating lifting adjustment conveying roller wheel system is used for conveying workpieces with various diameters, the workpiece rotary lifting righting wheel system isused for adjusting the coaxiality of the conveyed workpieces, the workpiece conveying positioning clamping limiter is used for limiting the workpieces, the workpiece duct righting clamping balancer isused for guiding and clamping the workpieces, and the workpiece storage rack is used for storing the workpieces to be machined and the machined workpieces and transferring the workpieces. According to the workpiece conveying, positioning and clamping combined automatic line, mixed application and frequent alternate operation can be carried out on the various workpieces such as long and short bodies, an automatic line production environment is created, and the effects of efficient connection and conversion application are achieved.

The invention relates to a sealed formation testing process of a high hydrogen sulfide well. The sealed formation testing process of the high hydrogen sulfide well comprises an on-site installation process and an on-site formation testing process. According to the on-site installation process, the high hydrogen sulfide well is sequentially connected with a fluid conveying pipeline, a water jacket furnace and an oil-gas separator, wherein a gas outlet of the oil-gas separator is divided into two paths, one path is connected with a hoop gate valve, a separator exhaust pipeline and an ignition torch, and the other path is connected with the fluid conveying pipeline, the hoop gate valve and an oil inlet of a sealed measurement tank. An oil outlet of the sealed measurement tank is connected with the hoop gate valve, an anti-explosion oil conveying pump and an oil charging platform, and an exhaust port of the sealed measurement tank is connected with a flange gate valve I, an oil catcher, a liquid separating bag, an exhaust pipeline, a back-fire relief valve, a flange gate valve II and an emission combustion torch. According to the on-site formation testing process, mixed fluid entering the sealed measurement tank is separated in a slippage mode, separated liquid passes through the hoop gate valve and the anti-explosion oil conveying pump to the oil charging platform to be loaded on a vehicle and transported outwards, separated sulfur-contained natural gas passes through the flange gate valve I, the oil catcher, the liquid separating bag, the exhaust pipeline, the back-fire relief valve and the flange gate valve II to the emission combustion torch.

The invention discloses a rapid customized manufacturing method for a chair. A near-end operating region and a far-end operating region are arranged; the near-end operating region is a transaction platform for consumers to input; the transaction platform is provided with one near-end operating region; the near-end operating region is provided with menus for various different chair patterns, wood material qualities, sizes, colors and decorative patterns; the menu information can be transmitted to the far-end operating region through an internet and converted into a formal CNC processing program for wood plate material selection; and a chair is manufactured by joggling a single wood plate machined by a CNC machine by gluing.

The invention provides a ground wire pile pulling out device, which belongs to the field of well drilling auxiliary equipment. The ground wire pile pulling out device comprises a positioning component and a skid-mounted component, wherein the positioning component comprises a bottom plate and a support frame vertical to the upper side of the bottom plate, one side of the support frame is provided with two support plates disposed in parallel, the support plates are provided with a plurality of chutes disposed in parallel and open outwards, the skid-mounted component comprises a chuck and a pry bar, one end of the chuck is fixedly connected to one end of the pry bar, one end of the chuck away from the pry bar is provided with a neck, positioning plates are symmetrically disposed on both ends of the lower end surface of the chuck, the ends of the positioning plates away from the pry bar are provided with positioning holes, positioning pins are disposed by being matched with the positioning holes, positioning levers are disposed at the lower end surface of the pry bar, and the positioning lever is disposed by being matched with the chutes. The ground wire pile pulling out device is stable in operation, a ground wire pile can be loosened by pulling at first, then a fulcrum height or distance of the pry bar can be randomly adjusted till the ground wire pile is pulled out, and the aims of safety, easiness and quickness are achieved.