48results about How to "Drilling safety" patented technology

A synchronous adjustable multi-axis machine is designed aiming at workpieces with pitch-row reference circle of different sizes and uniformly distributed angle, such as a shell of a small and medium motor and the drilling of an end closure. The synchronous adjustable multi-axis machine comprises a multi-axis machine shell, regulating cylinders, a drill pipe, a locknut, a drive gear, and a synchronous regulating mechanism, and the like. The multi-axis machine has a plurality of regulating cylinders which are internally provided with transition gears. One side of the transition gears is engaged with a drive gear, and the other side drives a drill pipe gear to lead the drill pipes to rotate; one end of axle of the transition gear is fixed in the multi-axis machine shell, and the other end is matched with the locknut which fixes the regulating cylinder; loosing the locknut so that the the regulating cylinder can rotate to lead the drill pipe locate on the needed position. In order to regulate the needed pitch-low synchronously, a linkage mechanism is arranged among a plurality of regulating cylinders; when the pitch-row of the drilling is adjusted, the regulating cylinders are rotate simultaneously to ensure that the distance of the drill pipe is evenly distributed along the circumference. The excircle of the regulating cylinder is cut with a value cue mark of the diameter (D) or the radius (R) of the drilling reference cycle.

The invention discloses a hyperbranched polyether amine environment-friendly shale inhibitor, a preparation method thereof and a water-based drilling fluid, and belongs to the technical field of oilfield chemistry. The shale inhibitor is prepared by taking diallylamine and a diether amine compound as raw materials through reaction. The shale inhibitor provided by the invention is a hyperbranched polymer, has good shale inhibition, clay stability and temperature resistance, is easy to biodegrade, and has good environmental protection performance; the preparation method provided by the inventionis simple in steps, easily available in synthetic raw materials and suitable for industrial production; the hyperbranched polyether amine shale inhibitor provided by the invention is good in component compatibility with other conventional drilling fluid treatment agents, the prepared water-based drilling fluid is suitable for a strong water-sensitive shale stratum, the expansion rate of shale canbe obviously reduced, the collapse of a well wall is prevented, the well wall is effectively stabilized, and the occurrence of underground complex conditions is reduced.

The invention discloses an old well potential tapping process for an old mining area of rock salt. The process comprises the following steps: newly building a multi-branch horizontally butted well tobe communicated with salt cavities or horizontal sections of multiple old well groups with production reduction or shutdown at present for brine mining, monitoring and controlling the well track by using a clinometer during drilling of the vertical well section of the multi-branch horizontal well, controlling the well deflection azimuth by adopting a clinometer and a single-bend helicoid hydraulicmotor in the building-up section drilling process, adjusting the azimuth after getting round of old cavity or a roof blowby area towards a salt layer downdip direction, and drilling towards a buttedtarget well, and therefore, the safety drilling is facilitated, the salt control area is enlarged, and the brine production and brine density are increased.

The embodiment of the invention provides a method, device and equipment for determining the stress condition of a tubular column. The method comprises steps of obtaining friction coefficients of a target well at a plurality of moments before a target moment; obtaining a first drilling data set of the target well; determining a hook load and a turntable torque of the target well at the target moment according to the friction coefficients at multiple moments before the target moment, the first drilling data set and a first prediction model; and based on the hook load and the turntable torque atthe target moment and the friction coefficient at the moment before the target moment, determining the stress condition of the tubular column in the target well at the target moment. In the embodimentof the invention, the stress condition of the tubular column in the target well at the target moment can be accurately determined at the previous moment of the target moment, and then early warning analysis can be carried out on drilling abnormal conditions such as jamming of a drilling tool at the target moment at the previous moment of the target moment so that safe and efficient drilling is guaranteed.

The invention relates to a device which can lead a pistol drill to be more conveniently used and is characterized by including a long slide plate that can move front and back; one end of the long slide plate is connected with one end of a tension rod by a connection rod; the lower end of the long slide plate is provided with a long pressing plate and a bracket; a pressing plate which can lead the head of a drill pistol to penetrate is vertically arranged below the long pressing plate by a location nut; the other end of the long slide plate is provided with a draw hook with a round ring by a stud arranged on a loop bar. A method which can lead the pistol drill to be more conveniently used includes that: leading the body of the pistol drill to penetrate the pressing plate and simultaneously leading the body to closely cling on the long pressing plate and the bracket; hanging the draw hook on a steel plate which sticks closely; holding the tension rod by one hand, arranging the tension rod on the front and drawling slowly to the back until the aiguille of the drill butted with the steel plate; after starting the pistol drill, drawing the tension rod to the back by the other hand; the other end of the tension rod drives the connection rod to lead the long slide plate to slide to the front, which pushes the pistol drill to drill until the drilling is finished. The device has the advantages of reducing vibration when drilling as well as easier, more convenient, safer and more stable drilling.

The invention relates to a sand gravel stratum drilling device and a drilling process, and belongs to the technical field of geological drilling. According to the technical scheme, a second sleeve (22) is arranged in a first sleeve (20), and cement paste (21) is arranged between the first sleeve (20) and a sand gravel stratum (23) and between the second sleeve (22) and the sand gravel stratum (23); and a drilling tool (7) and a drilling rod (17) are arranged in the second sleeve (22), and the top end of the drilling tool (7) is connected with the drilling rod (17). The sand gravel stratum drilling device and the drilling process have the beneficial effects that the machining precision of the drilling rod is high, dynamic balance is kept in the drilling process, the inner surface and the outer surface of the drilling rod are smooth, rock debris can pass through the drilling rod easily, and the flowing resistance of the rock debris is reduced; a large outer annular gap is formed between the hole wall and an outer pipe of the drilling tool, rock powder is promoted to be rapidly discharged to the ground surface, and the situation that the rock debris is precipitated in a hole, and consequently the accidents of drill sticking and drill burning are caused is prevented; and the drilling efficiency in the sand gravel stratum is improved, the core recovery rate is high, accidents are reduced, and safe drilling is achieved.

The invention relates to the field of petroleum drilling, in particular to a foam drilling fluid, which is used for maintaining stability of a well wall, preventing bit balling and keeping continuous drilling after formation water occurs during gas drilling. According to the invention, the foam drilling fluid comprises the following components in percentage by mass: 0.5-2.0% of foaming agent, 0.2-0.5% of foam stabilizer, 2-10% of mud shale inhibitor and the balance of water; and pH value of the foam drilling fluid is 8-10. The foam drilling fluid provided by the invention has the advantages of excellent foam performance, stronger mud shale inhibiting ability and enduring mud shale inhibiting performance; and underground complicated problems, such as cutting-carrying and water carrying problems, well wall instability problems, sticking problems and the like, after the formation water occurs during gas drilling can be solved, so that safe and rapid drilling is achieved.

The invention discloses a deep water oil and gas well overflow monitoring method. The deep water oil and gas well overflow monitoring method comprises the following steps: equidistantly mounting pressure sensors on a water spacing tube according to water depth, measuring circular fluid pressure in the water spacing tube in real time, then transmitting pressure information which is measured by thepressure sensors in real time to a ground control system, and processing and analyzing the measured information of the pressure sensors of the water spacing tube by the ground system to obtain measurement pressure difference between the two adjacent sensors. According to the ground system, drilling fluid is pumped in through a wellhead, the pressure difference between the two adjacent sensors is obtained in combination with a flow and pressure difference relation, the pressure difference measured by the pressure sensors is compared with the pressure difference calculated by the flow and pressure difference relation, overflow in the water spacing tube is monitored and recognized, an alarm is given, and a reasonable well control measure is provided. Underground early overflow monitoring precision is improved, underground early overflow can be recognized in time, the position of overflow fluid in the water spacing tube is determined, the reasonable well control measure is taken, and saferunning of drilling of oil and gas wells is ensured.

The invention relates to a shale inhibitor for a drilling fluid and a preparation method of the shale inhibitor. The method comprises the following steps: putting an initiator into a reactor; dropwise adding a catalyst to the reactor under atmospheric pressure and nitrogen protection, and carrying out sulfonated esterification reaction at 0-30 DEG C for 10-12 hours; filtering a reactant, and dissolving a filtrate into water; taking lower liquid after standing and phase separating, and carrying out reduced pressure distillation to remove water, so as to obtain a sulphur ester compound; dropwise adding the sulphur ester compound into a reaction kettle containing an aminating agent, and carrying out amination at 70-90 DEG C for 2-3 hours; and filtering a product, and carrying out reduced pressure distillation to remove a solvent, so as to obtain the shale inhibitor. The additive is suitable for a plurality of water-based drilling fluids; hydration dispersion of shale can be well controlled; the problems such as thickening and performance deterioration of the drilling fluid caused by hydration dispersion of the shale are effectively reduced; and a certain guarantee is provided for safe and efficient drilling.

The invention relates to a mine drilling mechanical equipment for mining ore in geotechnical engineering, which includes a top plate, a handle, a fixing device, a drilling device and a protection device. The upper end of the top plate is equipped with a drilling device, the lower end of the top plate is symmetrically provided with two fixing devices, and the lower end of the top plate is equipped with a protective device. Due to the limited technical level, the current mining drilling equipment has poor stability, needs manual fixing, is easy to slip, poor drilling accuracy, and the gravel and soil clods generated during drilling are likely to cause harm to users, high work intensity, and low safety. Low disadvantage, the present invention can solve the above problems, realize the function of drilling and protecting the specific position of the mountain, reduce the work intensity and improve the safety.