31results about How to "Solve the stuck drill problem" patented technology

The invention discloses organic salt drilling fluid. The organic salt drilling fluid is prepared from 1%-4% of bentonite, 0.3%-0.5% of sodium carbonate, 0.5%-1% of sodium hydroxide, 0.3%-1% of xanthan gum, 2%-8% of a filtrate loss reducer, 2%-5% of a nanometer blocking agent, 1%-4% of a blocking agent, 0.5%-4% of a lubricating agent, 40%-60% of organic salt and 25%-250% of an inert weighting agent, wherein the nanometer blocking agent is prepared by copolymerizing methacrylic acid carbomethoxy cage-like oligomeric silsesquioxane, N-isopropylacrylamide and acrylamide, and the lubricating agent is prepared by compounding castor oil polyoxyethylene ether, polyethylene glycol and polyvinyl pyrrolidone. The organic salt drilling fluid has the very good heat stability, the low filtration loss and the high blocking performance and lubricating performance and is especially suitable for shale gas well development.

The invention provides a drilling machine and a hydraulic system thereof. When the forward rotation pressure of a rotary motor reaches a pressure value to be set of an anti-sticking drilling valve, forward rotation control oil of the rotary motor opens a sequence valve of the anti-sticking drilling valve, and a hydraulic reversing valve of the anti-sticking drilling valve reverses at the same time, so that a hydraulic cylinder is changed from a propulsive state to a retrogressive state; when the rotary motor continues to rotate forward, drilling cuttings are discharged by a drilling tool to avoid sticking; when a drilling rod is disassembled from the drilling machine, a reversing valve is controlled to be in the center, and reverse control oil of the rotary motor opens sequence valves of afirst balance valve and a second balance valve, so that oil circuits of the feeding end and the receding end of the hydraulic cylinder communicate with each other, the hydraulic cylinder is in a floating state, and a damage to drilling rod threads is effectively avoided during disassembling the drilling rod; and when the reversing valve is in the center and the rotary motor does not reverse, hydraulic oil in the oil circuits is sealed in hydraulic cylinder by one-way valves of the first balance valve and the second balance valve to prevent a power head of the drilling machine from falling during drilling holes at an elevation angle or a pitch angle of the drilling tool.

The invention discloses a simulation experiment method for drilling-blocking prevention of a rock drill in a cave. The method comprises the following steps of: firstly, controlling a rod-disassembling mechanism to pressurize a drilling rod to cause a pressure value of rotary pressure to be stabilized to 12MPa; in the process of the simulation of drilling rocks by a down-the-hole drill, controlling a propulsion handle in an operator cab to pressurize a propulsion mechanism to cause a pressure value of propulsion pressure to be stabilized to 8MPa, and simulating a normal propulsion state of the down-the-hole drill in the process of drilling the rocks; controlling the propulsion handle to depressurize the propulsion mechanism to reduce the propulsion pressure to 5MPa suddenly, and simulating a drilling-blocking phenomenon in the cave and wherein a setting value of a pressure relay of a propulsion circuit is 3MPa, which is less than a critical propulsion pressure value of the drilling-blocking prevention in the cave; and drawing a change curve of the propulsion pressure with changes with time in the process. The method provided by the invention has the beneficial effects that the drilling-blocking problem is solved, the normal drilling operation of the rock drill is ensured, the service life of the rock drill is prolonged, and the body of the rock drill can be assisted to be stressed.

The invention discloses a jet flow adjusting method for rotary steering downhole jam releasing, and relates to the technical field of oil well downhole drilling equipment. The jet hole with the adjustable area is designed in a drill column of the rotary steering downhole equipment, and when engineering technicians consider that an downhole rock debris bed is seriously accumulated, an instruction is issued, the flow dividing proportion of the jet hole is determined, the equivalent runner area of a drilling tool is set, the opening area of the jet hole is calculated, part of drilling fluid passes through the jet hole and is combined with rotation of the drill column, and rotating jet flow is formed to destroy a peripheral rock debris bed, so that the rotary steering tool is jam released. Themethod is easy to control and high in jamming releasing capacity, and the drill jamming problem of the downhole rotary steering tool can be effectively solved.

The invention discloses a creation method for a simulation model of an anti-jamming hydraulic control system of a rocker driller, comprising the following steps of: firstly, setting an analogue load input value of a feed mechanism and an analogue input value of a slewing mechanism to cause the feed mechanism and the slewing mechanism to work in a normal state, and to cause feed pressure to stabilize at 8MPA and slewing pressure to stabilize at 12MPA; inputting a process that the feed pressure is reduced from a normal value into the analogue load of the feed mechanism to carry out cave jammed drilling simulation, wherein when the feed pressure is reduced to a setting value of a pressure relay signal of a feeding loop, an electromagnetic reversing valve acts, a multi-way valve changes direction to push a motor to slew, and the feed mechanism retreats; observing whether the anti-jamming hydraulic control system is capable of preventing cave jammed drilling; and inputting a process that the slewing pressure is increased slowly from a normal value into the analogue load of the slewing mechanism to carry out simulated slow varying jammed drilling. The method disclosed by the invention has the beneficial effects that the method is conductive to solving the problem of jammed drilling, ensures normal drilling work of the rock driller, and is conductive to prolonging service life and assisting driller stressing.

The invention provides a casing drilling equipment control method and device, electronic equipment and a drilling system, a drill bit is controlled to drill from an initial depth to a preset depth according to a preset drilling strategy, the drill bit is controlled to perform back reaming treatment on an oil well to obtain back reaming time, and the initial depth is the depth of the position where a casing shoe is located; the drifting equipment is controlled to be lowered from the initial depth to the preset depth according to the preset speed, so that drifting time is obtained; and according to the back reaming time and the drifting time, the casing pipe is controlled to be lowered in the oil well. According to the scheme, the problem of low efficiency caused by static observation of hole diameter reduction can be solved, the casing drilling time is shortened, and the casing drilling efficiency is improved.

The invention discloses a combined drill. The combined drill comprises a first drill bit and a second drill bit, wherein the first drill bit is cylindrical; the second drill bit connected with the first drill bit is coaxially arranged in the first drill bit; a plurality of drainage grooves used for outputting slag flow from the interiors of the drill bits are formed between the first drill bit andthe second drill bit; the drainage grooves are evenly formed in the outer ring of the second drill bit in the axial direction of the second drill bit; a through hole used for inputting water flow isformed in the middle of the second drill bit; the head of the second drill bit is arranged at the position, close to one end of the head of the first drill bit by a certain distance in the axial direction; the tail of the first drill bit is flush with the tail of the second drill bit; and the second drill bit is connected with a drill rod. Through cooperative work of two different drill bit functional combinations and change of drill bit cutting and de-slagging ways, smoothness and completeness of the inner wall face of a drill hole are guaranteed, the hole forming rate of the drill hole is increased, the length of the drill hole is increased, and the problems of hole collapse and drill jamming in the stratum drilling process are effectively solved.

The invention discloses a punched-pile drill blocking processing device. The drill blocking processing device comprises a chassis and a suspension arm. A winch support, a tray for containing a hammer and a suspension arm sliding rail are arranged on the chassis. A winch is arranged on the winch support. The suspension arm comprises two suspension-arm back sections and a suspension-arm front section, and a pulley is arranged at the front end of the suspension-arm front section. Two sliding blocks are arranged on the suspension arm sliding rail and are hinged to the two suspension-arm back sections respectively. The suspension-arm front section is hinged to two supporting frames, and the two supporting frames and the suspension arm form a tripod structure. A steel wire rope with scales on the winch penetrates through the pulley on the suspension arm and then is connected with the hammer. The projection of the hammer is located in a punched pile by adjusting the relative positions of the two sliding blocks and/or moving the two supporting frames. The invention further provides a punched-pile drill blocking processing method. By means of the drill blocking processing device and method, the problems that in the pile-foundation construction process, drill blocking occurs, and construction can not be normally carried out are solved, and smooth construction is guaranteed.