30results about How to "Reduce drilling accidents" patented technology

The invention discloses a real-time well drilling formation correction method and device and relates to the technical field of well drilling detection. The real-time well drilling formation correction device comprises a signal acquisition unit, a signal processing unit, a real-time data monitoring unit, a data storage unit, a first data correction unit and a second data correction unit, wherein the signal acquisition unit acquires well drilling parameter signals and transmits the well drilling parameter signals to the signal processing unit, signals processed by the signal processing unit are transmitted to the real-time data monitoring unit, the real-time data monitoring unit transmits the signals to the second data correction unit and the data storage unit respectively, the data storage unit transmits the signals to the first data correction unit for data correction, corrected data are transmitted from the first data correction unit to the second data correction unit for processing, and signals processed by the second data correction unit are transmitted to a drilling machine control unit. By means of the real-time well drilling formation correction method and device, real-time prediction and correction are achieved, well drilling accidents are deceased, abandoned well and useless well drilling is avoided, and well drilling success rate is improved.

The invention discloses a two-way combined drilling rig which comprises a drill rod (1) for intermediate support, drill rod couplings (2) disposed on ends of the drill rod (1), a small-diameter coreless drill bit (5) linked with one of the drill rod couplings (2), and a large-diameter coring drill bit (3) disposed on one of the drill rod couplings (2) and connected with the drill rod (1) in a sleeving manner; through the drill rod (1), the connection of the drill rod couplings (2) is realized; through the drill rod couplings (2), the connection of the large-diameter coring drill bit (3) and the small-diameter coreless drill bit (5) is realized, a drilling operation is implemented by the small-diameter coreless drill bit (5), and a reaming operation is implemented by the large-diameter coring drill bit (3), therefore, the two-way combined drilling rig is suitable for different geological drilling operations, and the drilling efficiency is improved.

The invention discloses a continuous cyclic drilling device used in the technical field of petroleum drilling. A drill pipe power tong is fixed on a power tong baseplate on the top of a balance compensation hydraulic cylinder, the balance compensation hydraulic cylinder is vertically fixed below the upper connection board of a support assembly, the piston rod of the balance compensation hydrauliccylinder passes through the upper connection board, and the top of the piston rod of the balance compensation hydraulic cylinder is fixedly provided with the power tong baseplate. A cavity assembly is fixed between the upper connection board and the lower connection board of the support assembly, the lower end of a drilling power slip is fixed in the bushing of a drilling turntable, the upper endof the drilling power slip is connected with the support assembly through a bearing beam, and the centers of the drill pipe power tong, the cavity assembly and the drilling power slip are coincident.The device has the effects of keeping the continuous cycling of the drilling fluid to discharge the drilling cuttings during the period of making a connection, avoiding the damage to the drill pipe caused by the up tong when screwing on and screwing off, eliminating the adverse effect of the slip holding capacity caused by the upset force of the drilling fluid, and improving the stress state between the slip and the drill string.

The invention discloses drilling coring equipment by adopting natural composite slurry to drill to achieve the effect of a rock core coated with mud. The drilling coring equipment comprises a drill pipe and a rock core pipe. A drill pipe joint located on the upper portion of the rock core pipe is a joint with a marble seat, the marble seat is arranged in the drill pipe joint, and when a water stopping marble is arranged in the marble seat, the upper portion of the rock core pipe is sealed; and the two ends of the rock core pipe are connected with a rock core pipe joint and an alloy drill bit,one end of the drill pipe is connected to the interior of the drill pipe joint, and the drill pipe joint is connected with the rock core pipe joint. The defects that in the prior art, the sandy soil rock core sample recovery is lower than 70%, and the undisturbed grain composition and structure of sandy soil cannot be maintained are overcome. The drilling coring equipment has the advantages that the sandy soil rock core sample recovery is sharply improved and can be as high as 100%, and the sampled sandy soil rock core sample is coated with mud, so that the undisturbed grain composition and structure of the sandy soil of the sandy soil rock core sample are maintained.

The invention discloses a composite well wall stabilizer which is prepared from the following components in percentage by weight: 10-40% of trimethyl potassium silicate powder, 15-35% of nanmu powder, 20-45% of paraffin and 15-25% of graphite powder. The invention has the following beneficial effects: the trimethyl potassium silicate powder and the nanmu powder are used as mutually synergistic main components, and the paraffin and the graphite are used as auxiliary components; when being used in water-based mud (including brine water mud), the composite well wall stabilizer can effectively inhibit the hydration and expansion of shale, improve the quality of mud cakes, enable the mud cakes to be compact, tough and lubricating and stabilize the well wall on the mud shale layer; and meanwhile, the composite well wall stabilizer has plugging action on the microcrack-developing stratum, and enables the stratum to be stable and less prone to collapse, thus achieving the effect of protecting the well wall. By using the stabilizer, well drilling accidents are reduced, and the comprehensive well drilling cost is lowered.

The invention relates to a portable magnetic memory detector for a drill rod, which is applied to nondestructive examination for a petroleum drill rod. The detector body is fixed with a magnetic memory sensor; a detector stander is provided with a right-angled steel plate of which the shape is of a right angle square; and the middle of the right-angled steel plate is fixed with a diaphragm plate on which a bearing and a roller are fixed. Two ends of the right-angled steel plate are fixed a motor box and an electric motor respectively. The outside of the right-angled steel plate is fixed with a split detecting ring. The magnetic memory sensor is fixed on the inner wall of the split detecting ring. A stroke sensor is arranged on the roller. The inner wall of the split detecting ring is provided with 16 magnetic memory sensors evenly. The portable magnetic memory detector has the advantages that the magnetic memory detector detects residual magnetic field intensity of the drill rod, provides a fire-new nondestructive examination method for the petroleum drill rod, provides data for evaluating surface damage of the drill rod, and plays a quite important role in reducing drilling accidents and ensuring drilling production safety.

The invention discloses a concentric pipe rock debris sucking and crushing device suitable for dual-gradient drilling. The device is internally provided with a drilling fluid flowing channel providedwith two open axial ends, wherein the drilling fluid flowing channel is in shunted communication with a drilling fluid flowback channel, the inlet end of the drilling fluid flowback channel is locatedin the device, the outlet end of the drilling fluid flowback channel is provided with a crushing portion, the drilling fluid flowback channel is provided with a first jet flow throat portion and a second jet flow throat portion, and a mixing cavity is formed in the position, located between the first jet flow throat portion and the second jet flow throat portion, of the drilling fluid flowback channel. The device is also internally provided with an annulus drilling fluid upward-returning channel capable of making the device outside and the mixing cavity communicated, and the annulus drillingfluid upward-returning channel and the drilling fluid flowing channel are peripherally arranged in a spaced way. The concentric pipe rock debris sucking and crushing device suitable for dual-gradientdrilling facilitates horizontal drilling rock debris carrying, decreases rock debris beds, reduces the drilling cost and ensures safe and efficient drilling.

An identity identification method and device applied to petroleum drill pipe operation, the method comprising: conducting a magnetic marker processing on a specific region of a drill pipe; detecting a change in a magnetic characteristic at the specific region; and upon detecting an anomaly value of the magnetic characteristic, detecting the magnetic marker of the drill pipe, and acquiring a code number of the drill pipe based on a position, width and / or magnetic anomaly amplitude information of the magnetic marker. The advantages of the present invention are: first, the invention is easy to achieve, acquiring the drill pipe code number based on the position, width and / or magnetic anomaly amplitude information of the magnetic marker; second, the invention facilitates automatic reading by a machine, in particular facilitates automatic reading of the code number during drilling in the field; and third, the invention, via the drill pipe code number, obtains identity information of the petroleum drill pipe so as to establish a record for each of the drill pipes, thus enabling the length of time each drill pipe operating under various depth, tension / pressure, vibration and mud corrosion conditions to be known, thereby achieving a more scientific drill pipe classification, thereby reducing drilling accidents, preventing excessive allowance after retiring drill pipes, and reducing overall cost of the drilling operation.

The invention discloses an alarming drill rod for the drilling of a horizontal directional drilling machine. The alarming drill rod comprises a drill rod body, wherein a female joint is fixedly arranged at the rear end of the drill rod body; a washing fluid inlet cavity is formed in the female joint; a male joint is fixedly arranged at the front end of the drill rod body; a washing fluid outlet cavity is formed in the male joint; a hollow straight rod body is arranged in the drill rod body; an inner cavity of the hollow straight rod body is set to be a washing fluid passage I communicated with the washing fluid inlet cavity and the washing fluid outlet cavity; a chamber between the outer wall of the hollow straight rod body and the inner wall of the drill rod body is a washing fluid passage II; a washing fluid control switch is arranged in front of the hollow straight rod body. According to the alarming drill rod, a valve element is forced by the hollow straight rod body to move forwards along a guide groove of a valve seat under the resistance of a compression spring so as to automatically close a washing fluid flow passage, then the indication of a pressure meter of a surface mud pump sharply increases, and an alarming prompt is given, so that the drill rod is protected from being excessively bent and deformed, and the service life of the drill rod is prolonged.

The invention discloses an intelligent machine for petroleum drilling, the structure of which includes a drill pipe stabilizing device, an auxiliary clamp, a shock absorber, a support column, and a supporting frame. The drill pipe stabilizing device consists of a machine body, a driving mechanism, a linkage mechanism, a transmission belt, The drill pipe stabilization device is composed of a spinner mechanism, a closing cover and a small hydraulic cylinder. The drill pipe stabilizing device controls the linkage mechanism and the spinner mechanism to fit and assist the drilling pipes of different diameters through the driving mechanism, so that when the drill pipe is drilling down to extract oil, Reduce rotation shaking and increase the safety performance of mining. The auxiliary gripper uses the cleaning mechanism to scrape off the garbage on the surface of the drill pipe, and then sprays water on the surface of the drill pipe to clean it through the spray head, which reduces the amount of manual labor and increases To improve the recovery efficiency, this technology can ensure that the well wall does not collapse to the greatest extent, avoid pipe sticking, reduce drilling accidents, increase the ROP, and balance the rotation of the drill pipe.

The invention discloses an environment-friendly plugging agent for drilling fluid, which is prepared from the following raw materials in parts by weight: 40-55 parts of modified starch, 20-30 parts of lignocellulose, and 5-15 parts of antioxidant , 3-10 parts of nano-calcium carbonate and 15-30 parts of dispersant, wherein the antioxidant is 2,5-di-tert-butyl hydroquinone, didodecyl thiodipropionate and hindered phenolic antioxidant One or more of the oxygen agents. The invention also discloses a method of an environment-friendly plugging agent for drilling fluid, which is characterized in that it comprises the following steps: stirring the modified starch and lignocellulose, mixing evenly, and then adding a dispersant, at 65-90°C Stir at high temperature for 90-120min, then add nano-calcium carbonate, stir for 30-50min, heat up to 85-115°C, add antioxidant, stir for 1-1.5h, then cool down to 80±5°C, and keep warm at this temperature React for 4-5 hours, pulverize, and pass through a 60-80 mesh sieve to obtain an environmentally friendly plugging agent for drilling fluid. The invention has the advantages of environmental protection, good plugging effect and low fluorescence intensity.

The invention discloses a cleaning and lubricating fast drilling agent and a preparation method thereof. The cleaning and lubricating fast drilling agent comprises the following components in part by weight: 70-90 parts of waste grease, 2-7 parts of a fast penetrating agent, 2-5 parts of an emulsifying agent, 3-8 parts of a catalyst, 3-7 parts of a wetting agent and 5-9 parts of a surfactant. With the waste grease as a raw material, the prepared cleaning and lubricating fast drilling agent is good in compatibility, high in temperature resistance and wettability and low in surface tension, so that bit balling is effectively prevented; the cleaning and lubricating fast drilling agent is good in lubricating effect, strong in inhibition, resistant to salt and rock debris pollution, good in reservoir protection, environment-friendly, and extremely low in foaming rate before and after high temperature; the preparation method is simple in process and relatively low in cost; by the preparation method, key technical problems of deep well drilling and ultradeep well under complex geological conditions are solved; the cleaning and lubricating fast drilling agent protects an oil and gas reservoir, reduces drilling accidents, increases the drilling speed overall and reduces the drilling cost.

The invention provides a pup joint and a well drilling device. The pup joint is used for being connected with a drill bit, the pup joint comprises a pup joint body, an oscillation cavity is formed in the pup joint body, so that drilling fluid flowing into the oscillation cavity forms Helmholtz resonance in the oscillation cavity to drive the pup joint body and the drill bit connected with the pup joint body to generate ultrahigh-frequency vibration with preset frequency, and when the vibration frequency is close to the rock resonance frequency, rock resonance crushing is induced. The pup joint solves the problems that in the prior art, a drilling speed increasing device is low in drilling and rock breaking efficiency, low in drilling speed and long in drilling period in deep hard formation drilling.

The invention discloses a while-drilling monitoring method and device for formation pressure. The monitoring method includes the steps that the change of drilling parameters in the drilling process is monitored, whether drilling operation is conducted on an over-pressure packing layer or not is judged, and if yes, a drilling system gives out warning information, or else drilling operation continues being conducted. The change of the drilling parameters in the drilling process is monitored, the warning information is given out before drilling operation is conducted on the over-pressure packing layer, the mud density of a shaft can be automatically or manually adjusted in time, potential hazards of well kick, blowout and the like which are probably caused are eliminated through an effective well control method, and drilling accidents are reduced.

The invention discloses oil-absorption resin. The oil-absorption resin is a compound expressed as formula (I), wherein a is 100000-150000, b is 400000-500000, and m is 30000-35000. The oil-absorption resin is high in expansion rate in an oil-based drilling liquid system, excellent in oil absorption effect and high in plugging capability. The formula is shown in the description.

The invention provides an automatic rock removing device with a triangulated round lip diamond-impregnated drill bit. The device comprises a hollow diamond drill bit and a hollow drilling rod which are connected through a connecting ring; the inner hole diameter of the hollow diamond drill bit is not greater than the inner hole diameter of the hollow drilling rod; the blades and a first diamond layer are arranged on the upper surface of the hollow diamond drill bit; a second diamond layer is arranged on the surface of each blade; at least one chipping removing guide groove is formed around the hollow diamond drill bit; the three blades are arranged like a triangle; axes of the chipping removing guide grooves are inclined toward the inside of the hollow diamond drill bit; at least one chipping removing opening groove is formed in the middle of the hollow drilling rod. The device is fast to drill, long in service life of the drill bit, quick to remove chippings, high in adaptability, and particularly applied to the core drilling industry.

The invention discloses a drilling coring method enwrapping a rock core by using a mud coating in sandy soil. The drilling coring method comprises the following steps of putting a drilling apparatus in position and assembling; preparing natural compound mud according to the distribution condition of a stratum; drilling coring: according to the category of the stratum, drilling, by the drilling apparatus, until a drilling depth of 1.50m according to a corresponding drilling parameter; stopping a pump, stopping circulating the natural compound mud in a hole of a drill pipe and a drilled hole, opening a mud return valve, and putting a water-stop marble into the drill pipe; burning a bit, carrying out dry drilling after stopping the pump, drilling by adopting a low rotational speed and low drilling pressure in the beginning, when a rock core barrel is filled with the rock core, drilling by adopting high drilling pressure and a high rotational speed, generating a higher temperature betweenthe bottom of an alloy bit and a rock core sample of the sandy soil within a short time, and slightly sintering the bottom of the alloy bit and the rock core together; lifting the bit; withdrawing thecore by the pressure of the mud. The drilling coring method has the advantages that the recovery rate of the rock core sample of the sandy soil is improved by a wide margin, and can reach 100 percent; the rock core sample of the sandy soil is enwrapped by the mud coating, and the rock core sample of the sandy soil is enabled to maintain the undisturbed grain composition and structure of the sandysoil.

The invention discloses a drilling tool, and relates to the technical field of a drilling machine, aiming at solving the technical problems of realizing reliable connection and reducing drill fall-off accidents. The drilling tool comprises a drill rod and a drill bit connected with the drill rod, wherein flange connection plates of the drill rod and the drill bit are respectively provided with at least two openings and at least two pin holes; the flange connection plates of the drill rod and the drill bit are in butt joint; the openings and the pin holes which are arranged on the flange connection plate of the drill rod correspond to those arranged on the flange connection plate of the drill bit; the corresponding openings are respectively provided with an I-shaped block; the flange connection plates of the drill rod and the drill bit are connected with each other by the I-shaped blocks; and pin shafts used for transferring torque pass through the corresponding pin holes. The drilling tool is applicable to construction of large holes in large and medium-sized projects or other projects of mines.

The invention discloses a high-stress soft outburst coal seam mining method which comprises a coal seam gas extraction method, wherein the coal seam gas extraction method comprises the steps of drilling with an arc-shaped three-edge drill rod matched with the air compressing and slagging drill technique, extracting gas at the position close to a drilled hole, and conducting dedusting on the hole, average drilling depth is 75 m - 80 m, the gas releasing rate of a great coal working surface reaches over 60%, the content of residue gas of a protected coal seam is below 7 m<3> / t, and during tunneling of the great coal working surface, the absolute gas discharge is 2.0 m<3> / min - 2.5 m<3> / min, and the maximum gas density of a return current is about 0.3 percent; during stoping of a stope working surface, the absolute gas discharge is 3.5 m<3> / min - 4.5 m<3> / min, the maximum gas density of a return current is about 0.4 percent, and the gas density on a corner of the stope working surface is 0.6 percent at most; a hole deduster is used for dedusting during drilling, and then dust concentration of the working surfaces is reduced.