42results about How to "Strong on-site practicability" patented technology

The invention discloses a multilayer-section fracturing technique pipe column comprising an oil pipe, a safe releasing sub, an ejector, a ball seat, an oscillator, a sand-oil blender, an oil pipe, a packer and a blank plug which are sequentially connected from top to bottom. A construction method of the multilayer-section fracturing technique pipe column comprises the following steps: putting the pipe column into a well, aligning the ejector with a target segment, feeding a seal ball through an opening of the well, positioning the seal ball on the ball seat so as to seal a liquid flow passage below the ball seat immediately, and performing abrasive perforating by use of the ejector; after abrasive perforating is finished, repeatedly leaching out the seal ball, lifting up the pipe column to seal the packer, injecting sand-laden fluid with a high sand ratio into the oil pipe in a low-displacement manner, and annularly ejecting pure liquid into an oil sleeve; performing a repeated 'lifting-descending' annular displacement step so as to form pulse cycles so as to control down-hole sand concentration in real time, so that temporary blockage of a proppant in a seam is realized, the static pressure in the seam is instantaneously improved, the crack complexity is further improved, and the purpose of improving the well yield through complicated seam-net fracturing is achieved; and after the construction is finished, lifting the pipe column to a next target segment, and repeating the construction process.

The invention provides a prediction method and exploration method of geological sweet spots of a reservoir of inter-salt shale series of strata and relates to the field of petroleum survey. The prediction method comprises the following steps: sampling different shale series of strata in the inter-salt shale series of strata to determine the rocky lithofacies of the shale series of strata; samplingthe shale series of strata with the rocky lithofacies of dolomite to determine the content of organic carbon, vitrinite reflectance, porosity, permeability, flowable pore throat radius, density, structure, soundwave, flowable oil mass heat releasing hydrocarbon and oil saturability index, wherein the rocky lithofacies, hydrocarbon source condition, storage and gathering condition and oil containing characteristic are met; and obtaining the sweet spots of the reservoir of inter-salt shale series of strata and the positions thereof and comparing the prediction result with the exploration result, wherein the relative error is smaller than 20%. The method has relatively high prediction precision and high field practicality. The method applied to exploring the geological sweet spots of the reservoir of inter-salt shale series of strata has relatively excellent field practicality.

The invention discloses a modular power supply scheme automatic-generation method based on the AR technology and the VR technology, and belongs to the technical field of power distribution. The method comprises the steps of integrating the basic databases of a power grid, acquiring the architecture diagram and the openable capacity of the power grid, and ensuring the availability of a power supply point; subjecting a power supply scheme to modular refinement and typesetting, and setting the parameters of options in each type and calibrating the parameters so as to form system point selection parameters; importing the architecture diagram and the openable capacity data of the power grid into a program, and compiling the power supply scheme and a support drawing in cooperation with the system point selection parameters; and displaying the power supply scheme and the support drawing in the 3D form based on a virtual reality module. The related system of the above method comprises an inputting module, a checking and reminding module, a drawing editing module and a virtual reality module, wherein the above modules are sequentially connected. The method is high in efficiency, formal in manufacture, strong in scheme depth property and good in interactivity. Based on the method, construction problems can be found out more quickly and more conveniently. Therefore, the requirements of users in rapid power transmission can be met.

The invention discloses a continuous natural gamma logging while drilling instrument and a logging method thereof. The continuous natural gamma logging while drilling instrument is mainly composed of four parts, i.e., a rock debris collector, a natural gamma sensor, an access integrated logging instrument and natural gamma signal acquisition software, wherein the rock debris collector is designed according to onsite well conditions and project design requirements and realizes rock debris quantitative continuous collection and automatic updating functions so as to enable the natural gamma sensor to perform continuous measurement on underground rock debris. According to the invention, real-time detection is performed through the natural gamma sensor, detection signals are input to the integrated logging instrument, lag depth correction and data acquisition processing are carried out, a real-time curve and real-time data can be output, a reference basis is provided for geological technical personnel in lithology identification, stratum comparison and horizon sticking work, and the exploration efficiency is improved.

The invention provides a movable blasting protection cover plate and belongs to the technical field of blasting construction. The movable blasting protection cover plate comprises a cover plate assembly, a supporting frame and sliding rail assemblies. The material of the movable blasting protection cover plate provided by the invention is a conventional material commonly used on a construction site, and the material is convenient to get. Meanwhile, the material of the movable blasting protection cover plate can also be gotten from remaining or wasted materials to achieve the effect of changingwaste into valuable on the site, and the materials can be repeated used. Secondary utilization of the materials is ensured. Waste of the materials is reduced. The movable blasting protection cover plate is an independent unit and can be independently used. The multiple independent units can also be combined for use, and the site practicality is high. The movable blasting protection cover plate can be quickly moved and installed, and is quick in disassembling and assembling, reusable, convenient to construct on site and capable of protecting the safety of surrounding construction personnel tothe maximum extent.

The invention relates to a shielding suit complete-set device for measuring step voltage and contact voltage. The shielding suit complete-set device comprises a shielding suit; the shielding suit includes a right foot insulating boot part, a left foot insulating boot part and a glove part; an inter-electrode voltage measuring module (2) is fixed on the shielding suit; the inter-electrode voltage measuring module (2) is provided with three signal input ports and a signal output port; and the three signal input ports are a first signal input port, a second signal input port and a third signal input port. The device can be applied to the step voltage and contact voltage signal measurement in power system ground grid comprehensive evaluation and measurement. The device has high integration degree, can accurately measure all step voltage and contact voltage in a grounding power grid region under a grounding power grid comprehensive evaluation test condition or direct current ground loop grounding operation mode.

A multifunctional tool kit with functions of a portable power source and a light source comprises a tool kit body and a tool kit cover on the tool kit body. A handle is disposed on the tool kit cover. A foldable support arm is disposed in the tool kit body. The lower end of the foldable support art is connected with the inner side of the tool kit body. The upper end of the foldable support arm is connected with a solar panel. A power supply and a power supply output module connected with the power supply are disposed in the tool kit body. A low-voltage charging groove and tool slots for placing tools are formed in the tool kit body. A lamp strip is further disposed on the outer side of the tool kit body. A circuit switch is disposed on the circuit of the lamp strip. An LED tool handle is disposed in the tool kit body. The multifunctional tool kit has the advantages that the black tool kit design and layered arrangement are used, natural energy is utilized, the tool kit gets rid of the dependence on field environments, and the tool kit is energy saving and environmental friendly, convenient and efficient, and high in field practicality.

The invention relates to a ground pipe network and underground oil reservoir complex system production optimization method. The method includes the steps of selecting an offshore oil field group and an oil field block which need to be subjected to injection-production system adjustment; establishing a multi-stage progressive production gathering and transportation structure model of the offshore oil field group; establishing a ground pipe network and underground oil reservoir complex system production optimization mathematical model; arranging oil field field statistical data or finite oil reservoir numerical simulation results to form time series data, and generating sample points required for training and verifying a deep learning model; establishing an oil reservoir numerical simulationagent model based on a long-term and short-term memory network, and performing training and parameter adjustment; performing optimization solution based on a long-term and short-term memory network agent model and a covariance matrix adaptive evolution strategy; and verifying the injection-production system optimization adjustment effect of the offshore oil field group. According to the ground pipe network and underground oil reservoir complex system production optimization method, an injection-production system of the multiple oil field blocks in the offshore oil field group can be rapidly and comprehensively optimized under a plurality of constraint conditions such as offshore facility liquid volume capacity limitation and the like.

The invention provides a rotatable-nozzle-type double-cluster water jet fracturing tubular column and a fracturing method. Archimedes double-helix structures are designed in inner cavities of conventional water ejectors structurally, four spherical nozzles are distributed on a double-helix groove of an inner cavity of each ejector body, the flowing state and the flowing direction of fluids with sand are changed to enable the fluids to evenly enter each nozzle, the problem of incapability of adjusting the orientation of nozzles of double-cluster water ejectors of horizontal wells is solved effectively, the problem of unevenness in concentration, flow and pressure of the sand between the upstream nozzles and the downstream nozzles of the bottom-packer-dragging double-cluster water jet fracturing tubular column is also solved, and early failure of some ejector due to uneven washout of the upstream ejectors and the downstream ejectors of the bottom-packer-dragging double-cluster water jet fracturing tubular column is prevented effectively, so that fracturing success rate of directional ejection holes of the double-cluster water jet fracturing tubular column is increased greatly, on-site practicability is high, application effect is remarkable, and the rotatable-nozzle-type double-cluster water jet fracturing tubular column is applicable to bottom-packer-dragging graded double-cluster water jet fracturing process of the horizontal wells.

The invention relates to a novel full-sealed electromagnetic shielding impedance box. The novel full-sealed electromagnetic shielding impedance box comprises a box body and a foundation, wherein the outer side of the foundation is respectively provided with a grounding end, a foundation outer side measurement end coaxial cable jack and a foundation outer side signal end coaxial cable jack in a circumference direction, the box body comprises an electric field shielding cover and a magnetic field shielding cover which are sleeved with an interval, the electric field shielding cover is arranged at the outer side of the magnetic field shielding cover, intervals are arranged between the top portion and circumference of the magnetic field shielding cover and the electric field shielding cover, and bottom portions of the electric field shielding cover and the magnetic field shielding cover are respectively provided with an opening. The method is more applicable to AC high voltage signal measurement in complex on-site test environments and can realize long-time measurement without influence of external factors such as, an electromagnetic environment, rain, snow, dust storm, on-site wiring and disposing position.

The invention provides a nested module, a nested modular building structure using the nested module and a construction of the nested modular building structure using the nested module, wherein the nested building module comprises a plurality of sub-modules nested layer by layer; the adjacent sub-modules are slidably connected with each other, and when the nested module is used for building construction, the nested module is firstly hoisted to a preset installation height of a bearing structure; then the nested module slides to the preset installation position of the outermost sub-module, and the outermost sub-module is fixedly connected with the bearing structure; finally, each layer of sub-module sequentially slides to the preset installation position from outside to inside, and is fixedly connected with the bearing structure; according to the invention, the method has the advantages of being suitable for rapidly and efficiently carrying out modularized building construction, and hashigh construction efficiency and good economic benefit.