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

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 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 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 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.