44results about How to "High Efficiency Drilling" patented technology

The invention relates to a hot compression high phosphorus iron-base diamond bit and the preparation method. The content of the diamond is 75 percent to 95 percent, the matrix materials have the component and the content that Fe powder is 35 percent to 50 percent; P is 3 percent to 6 percent; B is 1 percent to 2 percent; Ni is powder 5 percent to 10 percent; Co powder is 5 percent to 7 percent; 663-Cu powder is 25 percent to 32 percent; Mn powder is 2percent to 3 percent; Ti powder is 1 percent to 2 percent; rare earth La is 1.5 percent to 2 percent, and rare earth Ce is 1.0 percent to 1.5 percent. The preparation method comprises the procedures of material preparation, material packing and material mixture, die filling, hot-pressed sintering. The invention has the advantages that the matrix materials are widely used, and the cost is low; the sintering temperature is decreased; the hot etching of the iron to the diamond under high temperature is reduced; and the service life of the drill bit are improved; the drill bit has a broad spectrum; and the application scope is wide.

The invention relates to an eccentric adjustable stabilizer with a variable diameter, which is used for being combined with an underground directional or anti-tip drilling tool, can be used in match with a rotary directional drilling system, and can realize the automatic underground diameter variation and the eccentric adjustment, improve the level of the drilling technique and increase the economic benefit. The technical scheme is as follows: a compression sleeve barrel, a cross joint, a diameter variation mechanism, a cross joint, a gear shifting piston and a gear shifting mechanism are sequentially installed on the inner cavity of a housing from the top to bottom; five fixed cylindrical bodies are installed on a protruded arris of the outer part of the housing in an axial direction, five moveable hard alloy cylinders are respectively installed in the inner cavities of the other two protruded arrises in an axial direction, the front end of a gear shifting dowel pin in the gear shifting mechanism is inserted in the gear shifting slot of a gear shifting cam body, and gear shifting slots with special traces are arranged on the outer periphery of the gear shifting cam body. The gear shifting cam body can be moved up and down, can be rotated, can automatically realize the diameter variation and the eccentricity underground, and can realize step gear shifting and stepless gear shifting. The eccentric adjustable stabilizer with the variable diameter has the advantages of high intensity, favorable leak-proofness and long service life, and can be used for the drilling construction of directional wells and straight wells, thereby improving the overall drilling technical and the economic benefits.

The axial vibrator belongs to the field of drilling tools, in particular to an axial vibrator. The axial vibrator can produce an axial vibrating through adopting pressure pulses produced by a circumferential vibrator or a pulser to effectively solve the pulling problem of drill string of high angle extended-reach wells and horizontal wells. The axial vibrator is simple in structure and reliable in vibrating. The pulser can be replaced and pressure oscillation of slurry can be changed; therefore, the vibration power can be adjusted and the adjustability is strong.

An openable-closed drill bit comprises a hollow drill bit body and a central moving wing hinged to the hollow drill bit body. The hollow drill bit body is provided with at least three knife wings, each knife wing is provided with a cutting tooth at least, the central moving wing is provided with at least one cutting tooth and positioned to the hollow drill bit body through a spring positioning pin, a groove for mounting the central moving wing is formed in the hollow drill bit body, one end of the central moving wing is connected in the groove of the hollow drill bit body through a hinging structure while the other end of the same is provided with a positioning groove, the positioning groove allows the spring positioning pin to be clamped therein for positioning when the central moving wing is closed, the groove is of a half-open groove structure, and the hinging structure is positioned at one open end of the groove. Therefore, the openable-closeable drill bit is simple in structure and convenient to mount and demount and is used for solving the technical problem that the central wing of the drill bit cannot be normally opened caused by the fact that the drill bit body is highly stressed and is prone to deforming when the drill bit comes across hard rock during drilling of a lower sieve pipe in a drill column.

The invention relates to a fabrication method for a hot pressing diamond bit with added aluminium oxide hollow balls. The method comprises the following processes: allowing the aluminium oxide hollow balls and the diamonds to be subjected to pelletization and film applying; uniformly mixing the film applied aluminium oxide hollow balls, the diamonds and bit matrix powder subjected to ball milling and an adhesive; weighing the mixture and filling into a graphite die according to the required amount of each of drill bits in various specifications; pressing a drill bit steel basal body on the graphite die which is then delivered into an mid-frequency electric furnace and pressing machine all-in-one machine for sintering, wherein the hot pressing pressure is 15-16 MPa, the boiler temperature is 950-960 DEG C, the heat-insulating time is 4-5 min, and the discharging temperature is 815-830 DEG C; and after discharging, slowly cooling to the ambient temperature under the heat-insulating condition, and carrying out demoulding so as to fabricate the drill bit provided by the invention. According to the invention, the diamond volume concentration of the diamonds in a fan-shaped cutting operating block of the drill bit is 11-13 percent, and the volume concentration of the aluminium oxide hollow balls is 12-18 percent. The drill bit is used for drilling objects that are as hard as that of hard and compact rocks; and average drilling effectiveness is improved by 95 percent, and the service life is improved by 80 percent as compared with a general diamond bit.

The invention relates to a basin edge complex tectonic zone normal-pressure shale gas horizontal well integrated design method. In the design process, for the characteristics that such as the Southeast Chongqing basin edge transition zone is strong in tectonic deformation, and the geological condition is complex, through superposition evaluation of a structural figure, a burial depth figure, a porosity figure, a gas content figure, a pressure coefficient figure and a curvature figure, geology and engineering optimal dessert areas are optimized, well sites are deployed, the seismic attribute isused for predicting stratum seam hole development situation, interval intvl losing is avoided, the well drilling aging is improved, and through target window and horizontal well orientation optimization and curvature prediction, the reservoir stratum fracturing effect is improved, the reservoir stratum capacity is sufficiently released, the single well economic benefits are improved, the technical support is provided for efficient exploration and development of the basin edge transition zone shale gas, operation is high, and the application prospect is wide.

The invention provides a secondary rock breaking drill bit for assisting pressurizing flow back through a spiral blade. The secondary rock breaking drill bit comprises a drill bit body, the blade anda cone; the blade is arranged at the top end of the drill bit body, and the blade and the drill bit body are of an integrated structure; and a gauge protection part is arranged on the outer wall of the blade. Through improvement for the rock breaking drill bit, primary cutting is conducted at the bottom of the drill bit to form primary rock debris, the rock debris returns to the cone under carrying flow back of a well-drilling fluid, the cone can conduct secondary breaking, the spiral blade slides in the longitudinal direction to be in surface contact with the well wall, a surface contact modeof the spiral blade is far greater than a line contact mode of a traditional straight blade, longitudinal vibration in the well-drilling process can be reduced, the rock debris generated by cutting of the drill bit flows back upwards under the action of vertical component force of the spiral face, fluid carrying the rock debris generates reactive force on the spiral blade surface, the drill bit can be pressurized, and thus the problems and deficiencies proposed in the background technology are effectively solved and overcome.

The invention discloses a bidirectional screw-type while-drilling well wall shaper. The bidirectional screw-type while-drilling well wall shaper comprises a shaper body and further comprises a femalethread and a male thread which are arranged at the two ends of the shaper body correspondingly, at least three sets of spiral bodies are arranged on the shaper body at intervals, spiral structureson the positions, close to the two ends of the shaper body correspondingly, of the two sets of spiral bodiesin the at least three sets of spiral bodies are arranged in reverse, each set of spiral bodies is composed of at least three spiral bladeswhich are distributed in parallel and have spiral angles of 10 to 45 degrees with the center line of the shaper body, the outer diameters of one of the spiralblades on the corresponding set of the spiral bodies are larger than those of other spiral blades on the corresponding set of the spiral bodies to show the eccentric structures, and diameter retaining teeth and cutting teeth are arranged at the centers of the tops of the spiral blades and the edges of the tops of one sides of the spiral blades, at the eccentric positions, on the spiral bodies atintervals correspondingly. According to the bidirectional screw-type while-drilling well wall shaper, while-drilling downwards can be achieved, a well wall is shaped while drilling operation is conducted, the drilling operation time is not increased, and the well wall can be shaped once again when back reaming is conducted.

The invention provides a variable-diameter stabilizer which comprises a shell, a piston, a slide sleeve, a cone sleeve and a righting column. The cone sleeve is arranged on the lower portion of the piston, the righting column is arranged on the shell, and the cone sleeve and the righting column are matched with each other, so that the diameter can vary. The variable-diameter stabilizer has the advantages that the variable-diameter stabilizer can be controlled from the ground, so that the purpose of varying the diameter can be achieved; balls are cast to wellheads repeatedly, and accordingly the drafting purposes can be achieved by the aid of different drilling tool combinations without tripping out when the corresponding stabilizer is in rolling-out states; only drilling strings need to be tripped out to casing legs when double-support or triple-support drafting needs to be carried out, the balls can be cast, the righting column of the double-support (or triple-support) drafting variable-diameter stabilizer can stretch out under the control, and single-support, double-support and triple-support drafting can be carried out; the trip-out time can be saved when the stabilizer is used, the well wall soaking time can be shortened, downhole collapse risks can be reduced, and the drafting efficiency can be improved.

The invention belongs to the technical field of a downhole tool and particularly relates to a variable-diameter stabilizer capable of being controlled on the ground. The variable-diameter stabilizer comprises a pipe-shaped shell, wherein a central shaft is arranged in the shell; a self-locking groove is formed in the upper part of the central shaft; a tapered sleeve sleeves the middle part of the central shaft; a locking block square hole is formed in the upper part of the shell; a self-locking device is arranged in the locking block square hole; the inner end of the self-locking device corresponds to the self-locking groove in the central shaft; a plurality of cylindrical holes are uniformly formed in the shell along the peripheral direction and the axial direction; stabilization columns are arranged in the cylindrical holes; the inner ends of the stabilization columns are located on the outer wall of the tapered sleeve. According to the variable-diameter stabilizer capable of being controlled on the ground, the aim that the stabilizers with different outer diameter sizes are utilized in different well sections is realized. Meanwhile, the outer diameter conversion is realized by different ground operations and a control unit does not need to be specially and additionally arranged; the link that an existing non-electric-control variable-diameter stabilizer needs to control pump pressure or count the times of switching on and off a pump is overcome; the operation is simplified, the structure is simple, the operation is convenient and the well drilling timeliness is improved.

The invention discloses drilling circulating fluid conversion preflush and a preparation method thereof. The drilling circulating fluid conversion preflush consists of an organic ester, a plasticizer, oil, an emulsifier and a plugging agent, wherein the organic ester is phthalate esters or polyol benzoates; the plasticizer is one of polyethylene or vinyl chloride resin; the oil is mineral oil or vegetable oil; the emulsifier is one or more of OP-10, OP-30, tween-80, SP-80, oleic acid, P-30 and P-20; and the plugging agent is one of asphalt or modified asphalt products. The drilling circulating fluid conversion preflush has the advantages of: nontoxic or harmless production process, wider appropriate temperature range (-30 to 200 DEG C) than the appropriate temperature range (-5 to 160 DEGC) of conventional oil-in-water circulating fluid conversion preflush, stable product performance, good effect on keeping borehole wall stability, and capacity of shortening over 2/3 of complex processing time after conversing a drilling circulating fluid, improves drilling prescription, and saves drilling cost.

The invention discloses a method of dealing with deep-water internal wave flow for a deep-water semi-submersible platform. The method includes the following steps of 1, forecasting information, wherein conducting monitoring and early warning on the deep-wave internal wave flow, and predicting the information of the deep-water internal wave flow in advance; 2, changing platform orientation, whereinwhen the deep-water internal wave flow is monitored, the platform orientation is changed to a direction facing the deep-water internal water flow; 3, anchoring and reinforcing; 4, dragging wheels andpreventing deviation, wherein when the deep-water internal wave flow reaches the platform, the power and tension of a main tub are gradually increased, and the deviation amount of the platform is reduced; 5, removing the tug, wherein after the deep-water internal water flow disappears, the tug is removed, and a next operation is conducted. The method for conducting prediction in advance, changingthe orientation, conducting dragging on the wheels and preventing deviation is adopted to deal with the deep-water internal flow wave encountered in deep-water drilling, reduce the impact of the deep-water internal wave flow on the deep-water semi-submersible platform and ensure the operation, control and safe operation of the platform and is conducive to improvement of drilling time efficiency.The method is simple and convenient to operate and can be widely applied in the field of deep-water oil drilling.

A self-grouting floating hoop shoe device is characterized by the composition of a shell, a body, a clip, a sealing hemisphere, a spring, a central rod, a fixing piece, and a shoe guide. Embed four symmetrical clips with a thickness of 8 mm, a width of 5 mm, and two wings of 10 mm on the sealing hemisphere of the one-way valve of the floating hoop, so that there is a gap of about 8 mm between the sealing hemisphere of the one-way valve and the body. The clips are easy to make and install, and can realize automatic grouting during the casing running process, improve the casing running efficiency, reduce various risks in the casing running process, and improve the drilling efficiency.

The invention relates to a portable wireless communication system applied to an oilfield drilling operation. The portable wireless communication system comprises handheld fixable wireless interphones arranged on two platforms for the oilfield drilling operation, a portable wireless interphone arranged on a duty room or a header room for the oilfield drilling operation, head-wearing wireless interphones arranged in a mud pump room, a generator room and a vibrating screen for the oilfield drilling operation, and a fixed wireless interphone arranged in a driller room for the oilfield drilling operation, wherein communication circuit boards are arranged inside the handheld fixable wireless interphones, the portable wireless interphone, the head-wearing wireless interphones and the fixed wireless interphone. The portable wireless communication system is small in size, and has high interference resistance. The security of engineering operations is ensured; the drilling timeliness is enhanced; and the drilling cost is saved. When the portable wireless communication system is applied to a drilling high-noise place, calls are clear. Under 140-decibel noises, over 85 percent of noises can be filtered. Under 120-decibel noises, calls are clear and smooth, and murmurs are avoided.

The invention provides a logging instrument reliability evaluation method. The logging instrument reliability evaluation method comprises the following steps: carrying failure mode analysis and failure mechanism analysis on an antenna system of a logging instrument by utilizing the reliability experiment method; establishing a logging instrument antenna system fault analysis model based on a Weibull distribution model, and performing reliability life analysis on the antenna system of the logging instrument; performing goodness-of-fit test on the logging instrument antenna system fault analysismodel based on the Weibull distribution model by using a Kolmogorov-Smirnov test method; and evaluating the reliability of the logging instrument by utilizing the model which is inspected to be qualified by the Kolmogorov-Smirnov inspection method.

The invention discloses a PDC drill bit suitable for middle-shallow formation directional well drilling. The PDC drill bit comprises a drill bit body and further comprises blades, a cutting teeth anda water hole. The blades are arranged at the crown of the drill bit body, and each blade is provided with a gauge protection area. Parts of the blades are provided with cutting areas, and the positions, above the planes where the upper end faces of the drill bit body is located, of the blades are the cutting areas. The portions below the panels are the gauge protection areas. The number of the cutting areas is smaller than that of the blades, and the number of the gauge protection area is equal to that of the blades. According to the PDC drill bit suitable for soft formation directional drilling, through separation-type structural design of the cutting areas and the gauge protection areas, the number of the cutting areas and the gauge protection areas can be independently adjusted according to the formation characteristics and the directional drilling needs, and thus the directional well drilling capacity of the PDC drill bit in a middle-shallow formation can be greatly improved.