131 results about "Rock fragment" patented technology

A method and a system are provided to prepare a plurality of cuttings or other rock fragments or other porous media, such as cuttings from a drilling interval or multiple intervals, for computer tomographic scanning at the same time. A method and system also are provided to allow organization of mass quantities of cuttings or other rock fragments obtained from intervals of a well to more accurately categorize the cuttings to assist selections thereof for more detailed digital rock analysis, such as using SEM and FIB-SEM systems, are provided. A method and system also are provided to allow characterization of facies occurrence frequency of a depth interval using drill cuttings or other rock fragments. Computerized systems, computer readable media, and programs for performing the methods are also provided.

The invention relates to a device for sampling mud rock by cooling air and a rock sample sampling method thereof; wherein the device belongs to a rock mechanical sample preparation tool, a holding device of the device for sampling the mud rock by cooling air is arranged on a pedestal, a diamond sampling drill is arranged at the lower end of the sampling device, a blowing device, a refrigerating plant and a nozzle of the sampling device are connected into a whole, a transparent shade covers the holding device and the nozzle inside, the nozzle is positioned above the diamond sampling drill and a mud rock sample contact point, holes are arranged on the upper surface of the transparent shade, the diamond drill can freely get in and out of the transparent shade through the holes, the transparent shade is provided with a venting device, the holding device is a holder which can hold small-dimension objects and a 5mm-10mm of rubber cushion layer is arranged on the inner wall of the holder. The method of the invention can not only clean mud rock fragment and dust but also can cool the diamond sampling drill to prevent the drill from being burnt, avoids partial stress concentration of the mud rock sample and has high coring success rate.

The invention relates to a rock fragment size classification method based on multiple features and segmentation recorrection. The method comprises the following steps that (1) an original rock fragment size image is cut and blocked to generate subblock images of 64*43; (2) color feature extraction is carried out on the subblock images; (3) texture feature extraction is carried out on the subblock images; (4) feature selection is carried out on color features and texture features; (5) a classifier is designed through a support vector machine (SVM), and rough classification on the subblock images is completed; (6) watershed segmentation is carried out on the original rock fragment size image, and each obtained rock area is marked as blob; (7) on the basis of segmentation, a result obtained through rough classification is corrected and adjusted to improve classification performance and obtain a final classification result. According to the classification method, different classification algorithms are synthesized, efficiency and accuracy are high, cost is low, and the real-time performance requirement of a mining field is met.

A multifactor quantitative evaluation method for the 3D porosity in a geological period belongs to the technical field of diagenetic value simulation in a low-penetration compact reservoir. A planer grid well is selected, and well logging, logging, seismic and analysis and test data is collected and arranged; a 3D burial history and a thermal history under constraints of a sequence stratigraphic framework and deposition microfacies are established, 3D porosity evolution history models of mudstones, arkoses, quartz sandstones and rock-fragment sandstones are established on the basis of a target position, and porosity evolution histories of the different rock types in the target position are evaluated; on the basis of contribution of cementation and corrosion effects of the target position in a research region to the total porosity, porosity effect is corrected by decrease and increase, and a 3D porosity evolution process is evaluated; and a practically measured porosity of the grid well and the simulated porosity of a corresponding well point are analyzed by comparison, the precision requirement is met when the matching degree reaches 75%, and space-time distribution of the 3D porosity of the low-penetration compact reservoir in the geological period is evaluated.

The invention discloses a determination method for mechanical parameters of transverse isotropy shale reservoir rocks. The determination method comprises the following steps: carrying out an X-ray diffraction experiment to determine rock mineral constituents of a certain well depth; inverting rock porosity of the certain well depth by utilizing acoustic logging information; determining the stacking density of clay by utilizing the determined rock mineral constituents and the porosity; determining rigidity matrixes of transverse isotropy rocks of shale under a scale 0 by using a closed cycle-correction-identification method; determining the rigidity matrixes of the transverse isotropy rocks of the shale under a scale 1 and a scale 2 by utilizing a pore elastic theory; and substituting the rigidity matrixes into inversion models of Young modulus, poisson ratio and shear modulus and determining the mechanical parameters of the rocks. According to the determination method, the mechanical strength parameters of the rocks are inverted by using the X-ray diffraction experiment, so that the inversion result is accurate on the basis of establishing the experiment; field rock fragments are easy to obtain so that the determination method has the characteristics of time conservation, labor conservation and money conservation in the aspect of experiment operation.

A gabion includes panels of metal meshes that can be assembled so as to form a casing for receiving a bulk of filler material such as pebbles, natural rock fragments, wood chips or the like and/or a mixture of said materials. The gabion further includes at least one flexible sealed pouch provided with gripping members and configured to be inserted between the assembled panels.

The invention discloses a gravel geometric feature acquisition system and an acquisition method. A plane mirror assembly and a video camera are used for obtaining real gravel geometric features, and a gravel three-dimensional model is received according to the three-dimensional reconstruction technology, and the gravel geometric feature acquisition system and the acquisition method are used for obtaining the gravel geometric features and gradation characteristics. The main structure of the system comprises a retroreflector surface group, a video camera, and a computer. A picture is received by shooting at the gravels between the two mirrors and images reflected in the mirror, the images are inputted into the computer through a data line, the geometric features of rock fragments are gained through a three-dimensional reconstruction algorithm, and the three-dimensional model is established. The gravel geometric feature acquisition system and the acquisition method have the advantages that the geometrical features data of gravels are obtained, the granular real shape is restored, the shortcoming that a traditional screening test can only determine the minimum grain size is overcome. The gravel geometric feature acquisition system and the acquisition method are capable of meeting the accuracy requirements of the gravel granularity analysis, and of carrying out a plurality of stress deformation analysis by establishing a model combined with a discrete element software analysis technology.

The invention provides a ground instruction transmission method for controlling rotary steering drilling tool which comprises the following steps: (1)a ground control system gives out a ground control instruction; (2)a slurry pump pumps over slurry; (3)after an instruction transformation unit transforms the instruction into time flow variation parameters, the time flow variation parameters will be transmitted to a slurry flow control valve; (4)the slurry control valve shunts the slurry which is pumped over by the slurry pump as described in step(2); (5)an instruction-parsing unit of the rotary steering drilling tool parses the ground control instructions; (6)a control unit of the rotary steering drilling tool controls the movement of the rotary steering drilling tool. The present invention also provides an apparatus to implement the aforementioned method. The present invention can safely and reliably transmit the ground control instruction to the rotary steering drilling tool. In the instruction transmission process, the slurry pump does not need to stop working, which can greatly enhance effectiveness and avoid the underground failure caused by rock fragments accumulation. And due to the high controllability of the time flow, the control accuracy of the present invention is greatly improved.

The invention discloses a reservoir brittleness evaluation method based on microscopic features of rock fragments and drilling parameters. Roughness testing is carried out rock fragments to obtain a shale brittleness evaluation parameter B1; backscattered electron imaging (BSE), energy spectrum analysis (EDX) and nanoindentation experiments are performed to obtain microscopic rock mechanics parameters of rock fragments and carry out inversion on the parameters, shale micro-constitutive is established, upgrading is carried out to obtain macroscopic constitutive and corresponding macroscopic rock mechanics parameters and brittleness indexes B2 and B3; with finite-element simulation software, the shale macroscopic constitutive and corresponding rock mechanics parameters are applied to a drillcolumn-bit-rock-rock finite element model and on-site drilling information is inputted to obtain drilling parameters; according to the obtained drilling parameters, a brittleness-drilling parameter correlation model is established to obtain a brittleness index B4; and with the B1, B2, B3 and B4, a comprehensive brittleness evaluation model based on drilling parameters and rock fragment microscopic characteristics is established and a comprehensive brittleness evaluation parameter B is calculated. The method is simple and effective and the test cost is low.

The invention relates to a laser-water jet combined drilling device which mainly comprises a drill rod, a drill collar, a drill bit, an optical fiber, a clean water pipe, a fiber protection tube, a beam shaping device, a beam shaping device shell, a water guiding laser beam channel, a laser head, and a drill bit flow channel. The fiber protection tube and the clean water pipe are arranged in the drill rod and the fiber, cleaning water, and drilling liquid are separated. The beam shaping device and the beam shaping device shell are arranged in the drill collar. The laser head emits laser and the laser passes through the beam shaping device; cleaning water is collected in a V-shaped-cross-section channel at the center of the drill bit; a water-guiding laser beam is formed and is emitted fromthe water guiding laser beam channel. On the basis of the thermal effect of the laser and the cavitation of the cleaning water, the rock is broken and the rock fragments are prevented from entering the beam shaping device by jet of the cleaning water. The drilling fluid is jetted from the drill bit flow channel on the broken rock by boosting of a pump on the well. The rock is broken by several kinds of modes; the difficulty of rock breaking by the drill bit is reduced; the drill tool wearing is reduced; and the rock breaking efficiency is improved.

An embodiment of the present disclosure provides a multi-path combined high-low voltage plasma drilling method, a drill bit for drilling and a drill bit apparatus for drilling. The drilling method comprises: disposing a plurality of mutually independent plasma generators on a plasma drill bit, wherein the plasma generators are independently connected to a plasma power source on the ground through wires; allowing each of the plasma generators to eject high-frequency pulsed plasma arc under the control of its corresponding combined high-low voltage pulse power source on the ground; ejecting the high-frequency pulsed plasma arc onto a wall of a drilling well, forming impulsive high temperature thermal shock stress inside the rocks on the wall of the drilling well; and breaking the rocks under the shock of thermal stress to form rock debris.

The invention relates to a core-taking system capable of achieving automatic segmented deslagging and rock core truncation in a roadway and a using method thereof. The core-taking system comprises a core-taking pipe, a dedicated drilling machine, a high-low-pressure three-way connector and a water pressure pressurizing pump; the core-taking pipe is connected with the dedicated drilling machine, the high-low-pressure three-way connector is connected with the dedicated drilling machine, and low-pressure water used for deslagging and high-pressure water used for rock core truncation are provided for core-taking operation. In the using process, coal and rock fragments of the deep positions of drill holes can be automatically and effectively discharged, truncation can be automatically conducted on rock cores in the deep positions of the drill holes, and the defects that through a traditional core-taking pipe, coal and rock fragments in the deep positions are difficultly discharged, and rock core truncation cannot be achieved are overcome.

The invention discloses an experimental facility for simulating flow condition variations of multiple diameter expanding sections in natural gas hydrate well drilling. The facility comprises a mixture inlet, a sleeve joint A, a vertical section outer pipe, a flange joint A, an inclined well section outer pipe, a flange joint B, a horizontal section outer pipe and a sleeve joint B connected in sequence from the top down; the facility also comprises a computer monitoring system and a gas-liquid-solid separator, wherein the computer monitoring system is electrically connected with a pressure sensor and a speed sensor; and the facility also comprises an electromagnetic air pump A, an electromagnetic air pump B and a high speed camera, wherein a shunt pipe is connected with the output port of the electromagnetic air pump A. The experimental facility has the beneficial effects of being compact in structure, capable of being necessary to perform visualized experiment research on moving tracks and dynamic floating phenomena of rock fragment particles and natural gas hydrate particles in an annulus, and providing a basis for a flowing rule of a diameter expanding section flow field during a natural gas hydrate well drilling process.

The method of the present invention employs a subsurface production pump to displace hydrocarbon fluid, including any and all accompanying ground water and/or earthen contaminants, from the subterranean hydrocarbon reservoir depth of an oil well to surface storage and handling facilities via the subsurface production tubing, wellhead and surface flow line. As the subsurface production pump operates, compressed gas, or a mixture of compressed gases of sufficient volume and force is fed into the lower end of the subsurface production tubing in proximity to, or at a point above the subsurface production pump to mix into the hydrocarbon production fluid column. The resultant and considerably reduced density of the subsurface hydrocarbon production fluid column provides a reduction of subsurface production pump loading with all types of subsurface production pumps, and an improvement of sucker rod fall time when sucker rod activated subsurface plunger pumps are employed. Due to the additional cubic volume of the injected compressed gas, the increased hydrocarbon production fluid and gas velocity within the subsurface production tubing and the surface flow line improves hydrocarbon fluid shear from the conduit walls and sucker rod surfaces, and prevents earthen contaminants such as sand, clay, shale, coal or other rock fragments, from precipitating, accumulating and blocking the flow of hydrocarbon production fluid within the subsurface production tubing and the surface flow line.

The invention provides an HL-FFQH environment-friendly drilling fluid system and a preparation method thereof. The drilling fluid system is prepared from the following raw materials: water, bentonite,anhydrous sodium carbonate, an environment-friendly coating agent, an environment-friendly filtrate loss reducer, a bionic liquid lubricant, a bionic wall stabilizing agent, an environment-friendly inhibition and anti-collapse agent, a bionic nano plugging agent, an environment-friendly film forming agent and an environment-friendly diluting agent. The preparation method comprises the following steps: adding the bentonite into distilled water, and stirring and mixing; then adding the anhydrous sodium carbonate, sufficiently and uniformly stirring and curing; sequentially adding the environment-friendly coating agent, the environment-friendly filtrate loss reducer, the bionic liquid lubricant, the bionic wall stabilizing agent, the environment-friendly inhibition and anti-collapse agent, the bionic nano plugging agent, the environment-friendly film forming agent and the environment-friendly diluting agent and uniformly stirring to obtain the environment-friendly drilling fluid system.By adopting the HL-FFQH environment-friendly drilling fluid system and the preparation method thereof, mud is prevented from being dispersed and expanded at a mud shale section; the HL-FFQH environment-friendly drilling fluid system has good wall building performance, also has a strong rock fragment carrying capability and is used for effectively washing a wellbore; complicated accidents in a welldrilling process are avoided and the well drilling quality and efficiency are improved.

The invention discloses a preparation method of a shale rock fragment sample for a micron indentation experiment. The preparation method comprises the following steps: S1, preparing an epoxy resin adhesive; S2, adhering a sample: preparing a columnar rubber mold for pouring shale rock fragments and pouring the adhesive prepared by S1 into a mold; putting the screened rock fragment sample into theprepared mold filled with the adhesive, so as to completely cover the rock fragment sample with the adhesive; putting the prepared mold, the adhesive and the rock fragment sample into a vacuum dryingbox; curing at 60 to 65 DEG C for 3 to 5h; S3, carrying out cutting and polishing treatment on an adhered solid containing the shale rock fragments in S2, and treating the surface of the sample untilthe surface is smooth and flat; S4, carrying out an comparison experiment and proving whether the prepared sample meets experiment requirements or not. The preparation method disclosed by the invention has the advantages that the prepared shale rock fragment sample keeps original physical and chemical properties of rocks and obtained mechanical parameters of the rocks are accurate.

The invention discloses a well bottom foaming foam drilling method. According to the method, a foam generator used for conventional foam drilling is placed at the bottom of a drill pipe, i.e., the top of a drill bit, so that foam can be generated at the well bottom, foam liquid pumped by a foam pump can enter an annular space formed between the inner wall of the double-wall drill pipe and the outer wall of the double-wall drill pipe through a double-passage air and water faucet to reach the foam generator arranged at the bottom of the drill pipe; compressed air enters an inner center passage of the double-wall drill pipe through the double-passage air and water faucet to reach the foam generator; foam liquid and compressed air are sufficiently mixed in the foam generator to generate foam; and the generated foam can carry rock fragments to return to the ground surface from the annular gap formed between the outer wall of the double-wall drill pipe and the well wall, so that the whole drilling flushing liquid circulation process is completed. The well bottom foaming foam drilling method provided by the invention has the advantages that the foam is generated at the well bottom; the breaking of the foam in the flowing process is prevented; the best quality of the foam at the well bottom is ensured; pure foam liquid and compressed air are injected into the well bottom; the flowing resistance is small; and the drilling cost is low.

The invention relates to a reflective insulation type waste rock fragment natural stone exterior wall paint which is prepared from waste rock fragments, an aqueous emulsion, an inorganic adhesive, wood fibers, polypropylene short fibers, a film coalescing aid and a water raw material, wherein the waste rock fragments in the raw materials are leftovers of stones of a mine and stone fragments generated in a stone processing process. The exterior wall paint not only can be used for saving a lot of stone resources and reducing the consumption of stone resources, but also has a perfect real-stone texture and further has the characteristics of light weight, various specifications and colors, safety, environmental friendliness, never fading and the like. Meanwhile, the exterior wall paint has a reflective insulation function, so that the exterior wall paint can be used for effectively reducing absorption of solar radiant heat by a building, preventing temperature rise caused by solar radiant heat absorbed on the surface of the building and reducing introduction of heat indoors, and can maintain efficient thermal reflectivity of a surface layer for a long time, so that the requirements on heat insulation and heat control as well as energy conservation and consumption reduction of the exterior wall of the building are satisfied.

The invention discloses a preparation method of a drilling fluid shearing enhancer and belongs to the technical field of preparation of drilling fluid treatment agents. The preparation method comprises the following steps: putting methyl methacrylate, ethylene glycol, butyl acrylate and epoxy propane into a reactor; regulating the pH (Potential of Hydrogen) with a sodium hydroxide solution and then adding zinc stearate; reacting under the protection of nitrogen gas; then adding chitosan and vinyltrimethoxysilane and uniformly mixing and standing; then adding a catalyst and an initiator and carrying out modification reaction; after reacting, adding a cross-linking agent; reacting and discharging materials; filtering the discharged materials and collecting filtrate; after distilling, collecting distillation residues and uniformly mixing the distillation residues with sodium oxalate, an emulsifier and an auxiliary agent; collecting and stirring a mixture to obtain the drilling fluid shearing enhancer. The drilling fluid shearing enhancer prepared by the preparation method has relatively good high-temperature ageing resisting performance and still has a relatively good shearing enhancing effect under a high-temperature environment; the aim of suspending rock fragments on drilling fluid can be effectively realized; the drilling speed is improved and any damage to oil and gas reservoirs is not caused after the drilling fluid shearing enhancer is used.

The invention discloses a geological prospecting equipment for multipoint rock drilling sampling mixed collection. The geological prospecting equipment comprises a prospecting machine body, a liftingcavity is formed in the prospecting machine body, a lifting screw rod is rotatably arranged between the upper wall and the lower wall of the lifting cavity, and a lifting plate capable of moving up and down is arranged in the lifting cavity; the center position of the lifting plate is in threaded connection with the lifting screw rod, and four rotating cylinders which are the same in mechanism andare arranged and distributed in an annular matrix mode relative to the rotating chain wheel are arranged in the lifting cavity. According to the present invention, the rock is subjected to drilling sampling so as to achieve the rock drilling crushing recovery effect, such that the rock exploration sampling efficiency is high, and rock broken stones are efficiently recycled by automatically closing and communicating a drill bit sampling space, and are finally mixed and then uniformly collected through a multi-point sampling effect, so that the detection of the sampled and recycled rock fragments is closer to actual data, the occurrence of small-probability detection errors is reduced, and the exploration accuracy is greatly improved.

The invention relates to the technical field of drilling fluid auxiliaries, and provides an environment-friendly type drilling fluid anti-wear agent with high temperature resistance and a preparation method of the environment-friendly type drilling fluid anti-wear agent. The environment-friendly type drilling fluid anti-wear agent with the high temperature resistance comprises raw materials as follows: phosphorus pentasulfide, isooctyl alcohol, oleic acid, diethyl ammonium phosphate, potassium hydroxide, a molybdenum di-zinc compound, dimethyl silicon oil, zinc carbonate, aluminum distearate and water. The environment-friendly type drilling fluid anti-wear agent with the high temperature resistance is prepared from a natural polymer material, biomass oil and lipid through modified synthesis and esterification reaction, is not only an environment-friendly type drilling fluid auxiliary, but also can reduce wear, decrease frictional resistance and torque, increase the drilling rate and reduce drilling cost effectively and has higher tolerable temperature and higher salt intrusion resistance, thereby having more popularization value and further having better rock fragment hydrated dispersion inhibition capacity and better shale expansion inhibition function, and accordingly, the environment-friendly type drilling fluid anti-wear agent with the high temperature resistance is the environment-friendly drilling fluid auxiliary with the high temperature resistance and has the characteristics of advancement, maturity and economic efficiency.