48 results about "Dry well" patented technology

A pipeline strainer having a body with a straining element therein. One or more magnets are removably inserted into the straining element and configured to be removed from the body without causing liquid within the cavity to drain from the pipeline strainer. A drywell is used to house the magnets. The movement of withdrawing the magnets pulls metal particles along the outer surface of the drywell toward a debris drain. A baffle is disposed at the end of the drywell that is adjacent or near the debris drain to reduce turbulence from the fluid flow within the pipeline strainer.

The present invention discloses an oil-gas microorganism gene exploration method. The method comprises the following steps: respectively collecting samples of surface shallow layers above a known oilwell, a gas well and a dry well in an exploration area, performing high-throughput sequencing after extracting DNA, establishing a microbial community composition pattern diagram in the exploration area according to a sequencing result, respectively screening out characteristic microorganisms in surface soil above the oil/gas well in the exploration area according to the pattern diagram, and designing primers according to attribute characteristics and carrying out a fluorescent quantitative PCR detection on the samples in the whole exploration area to detect the number of the characteristic microorganisms. A contour line of the characteristic microorganisms obtained by the oil-gas microorganism gene exploration method has a high coincidence rate with the known well, has a good coincidencerate with a trap line, and can carefully describe an oil area.

The invention relates to a multipurpose dewatering well structure. A decompression well solid pipe and a decompression well filter pipe are cylindrical, have A same diameter and are sequentially connected from top to bottom to form a decompression well pipe. A drainage well solid pipe and a drainage well filter pipe are cylindrical, have a same diameter and are sequentially connected from top to bottom. A connector of the drainage well solid pipe and the drainage well filter pipe is arranged outside the decompression well solid pipe in a sleeving manner and is fixedly connected with the decompression well solid pipe, and an annular space between the connector and the decompression well solid pipe forms a drainage well pipe. In a formed well hole, clay is arranged on the periphery of the top of the drainage well solid pipe, a sealing steel plate set is welded to the bottom of the drainage well filter pipe for bottom sealing, layered water stop materials are arranged on the lower portionof the sealing steel plate set, gravel is arranged between the clay and the layered water stop materials, and gravel is arranged on the lower portion of the layered water stop materials and located around the decompression well filter pipe and the decompression well solid pipe. The clay, the layered water stop materials and the gravels are used for fully supporting the well hole. Multiple layersof underground water can be extracted in a layered control mode after one-time hole forming and well forming.

Various dry well temperature calibration systems, as well as other temperature control systems, are disclosed. The system can include a well configured to receive a unit under test, a heater configured to heat the well, and a temperature sensor configured to detect a temperature of the well. The system can include a helical airflow groove around the well. A venturi pump unit can be in fluid communication with the airflow groove. The venturi pump unit can be configured to draw a flow of air through the airflow groove, thereby cooling the well.

The invention relates to a pre-buried circular ring draining well closing manner which comprises a blind plate and a pre-buried circular ring. The pre-buried circular ring is arranged on the inner wall of a draining well, the blind plate is arranged on the pre-buried circular ring, and the pre-buried circular ring is fixed to a non-fine concrete pipe. The outer wall of the draining well is sequentially provided with a foundation slab, a waterproof roll, a base plate cushion layer and basement original soil from top to bottom. The blind plate and a groove of the pre-buried circular ring are subject to full welding. The pre-buried circular ring is fixedly welded to the non-fine concrete pipe. Concrete is poured on the upper portion of the blind plate. A switch valve used for draining well dewatering and drainage during and after sealing is arranged in the middle of the blind plate. The switch valve on the blind plate is in a closing state. The blind plate is located on the foundation slab layer. The pre-buried circular ring draining well closing manner is simple in structure and convenient to construct; and the pre-buried circular ring and the periphery of the blind plate are subject to full welding, meanwhile, the special structure of the blind plate is used for doing draining well dewatering work, and the aim of doing welding operation on the blind plate and the circular ring in the dry environment is achieved.

The invention discloses a method for passing through a fracture zone during drilling of a through-type air reverse circulation down-the-hole hammer. The method comprises the following process steps that (1) judgment of the fracture zone is conducted, and specifically, 1, the deslagging speed and the deslagging amount are obviously increased and are equivalent to two times of the normal discharge amount; and 2, the gas supply pressure of a whole drilling tool gas supply system is obviously reduced and is less than or equal to 1/2 of the normal working pressure, and meanwhile, the footage is obviously accelerated and is equivalent to 3 times-5 times of the normal drilling, namely the fracture zone is judged; (2) the thickness of the fracture zone is judged, specifically, the drilling footage meeting the condition in the step (1) is the thickness h of the fracture zone; (3) the fracture zone is treated, specifically, and if the thickness of the fracture zone is less than 2m, a hole cleaning measure is adopted for penetration; and when the thickness of the fracture zone is greater than 2m, grouting well cementation wall protection is carried out; (4)detection and inspection are conducted after wall protection, specifically, a dry well section is subjected to test drilling after 7 days of cementing, the footage is controlled at about 5 m/min, and the properties of rising cuttings are observed when entering the original broken section; and the main performance is that C30 concrete rock debris is added into rock in the fracture zone, the air pressure is normal, the deslagging is normal, the predicted well cementation section is not abnormal during drilling, and normal drilling can be realized.

The invention discloses a drainage well for a sunken pit bottom of an inner dumping site and a drainage method of the drainage well, and belongs to the field of mineral engineering. The sunken pit bottom comprises a backfill body layer, a large water filtering layer, water-permeable geotextile and a waste rock layer which are sequentially arranged from bottom to top, wherein the drainage well is vertically arranged at the backfill body layer, a water outlet of the drainage well is located outside the waste rock layer, the sunken pit bottom further comprises a drainage pipe, the water inlet end of the drainage pipe communicates with a water outlet of the drainage well, and the water outlet end of the drainage pipe extends out of the side slope of a waste dump. According to the drainage well, by reasonably treating the pit bottom, an artificial permeable layer is formed, the drainage well is arranged in the treated pit bottom by adopting the drainage well with a complete well structure, the drainage pipeline is arranged in an inclined shaft manner, and finally gushing water at the bottom of the sunken pit is drained out of the inner dumping site; and the drainage well can reduce the work amount of pit bottom treatment of the inner dumping site, save investment and reduce the pit bottom treatment time.

The invention provides a pump station foundation pit integrated drainage system. The system is characterized in that a circle of cement soil seepage interception wall is arranged outwards at intervals along the outer side line of a foundation pit to form a closed seepage interception wall body, the cement soil seepage interception wall penetrates through a permeable layer, and the bottom of the cement soil seepage interception wall extends to the position 2 m below a relative impervious layer; on the outer side of the foundation pit with the closed space formed by the cement soil seepage interception wall, a circle of out-pit pressure reduction wells is constructed outwards along the cement soil seepage interception wall, and the bottom elevation of the pressure reduction wells is located at the bottom elevation of the permeable layer; an in-pit drainage well is constructed in the foundation pit, and the bottom elevation of the drainage well is located at the bottom elevation of the permeable layer; and the pump station foundation pit integrated drainage system is jointly formed by the cement soil seepage interception walls, the out-pit pressure reduction wells and the pit interior drainage well, a closed seepage interception wall is formed by the cement soil seepage interception walls, the underground water level in a foundation pit is reduced to be 0.5 m or below of a design base through the drainage drainage well, and the water head difference between the interior and the exterior of the foundation pit is kept within the range of 7 m through the drainage pressure reduction well. The dewatering and drainage requirements of the foundation pit of the large pump station can be met, and dry land construction conditions are created.

The invention discloses a nuclear power plant spent fuel vertical storage dry shaft, which comprises a concrete base plate, a dry shaft and at least one ventilation shaft surrounding the dry shaft. The concrete base plate comprises an earth surface concrete plate and an underground concrete plate buried underground. The dry shaft is provided with a bottom located on the underground concrete plate,a top air outlet located above the ground surface concrete plate, and a dry shaft body located between the bottom air outlet and the top air outlet, at least one supporting bracket is arranged in theheight direction of the dry shaft body, and a spent fuel storage tank located at the bottom of the dry shaft and at least one spent fuel storage tank located on the supporting bracket are stored in the height direction of the dry shaft body. The bottom of the ventilation shaft is located on the underground concrete plate and communicated with the dry shaft, the ventilation shaft is provided witha top air outlet communicated with the natural environment, external natural air enters the bottom of the dry shaft from the top air outlet of the ventilation shaft, and decay heat of a spent fuel assembly in the spent fuel storage tank is discharged into the surrounding environment from the top air outlet of the dry shaft.

A molded basin for use with a submersible sump, sewage or grinder pump. The molded construction of the basin permits design improvements to be incorporated into the basin including bolt down slots in a bottom flange of a bottom of the basin, a molded inner basin mounting surface for a float tree, a molded inner surface support mount to receive a bracket of a rail system used to raise and lower the pump within the basin, a disc that fits within the basin and is supported by a molded inner facing horizontal rib to create a wet/dry well and structural features present in a top surface of the basin and a cover for the basin to close said basin. Extension risers may be added to extend the height of the basin, wherein the extension risers contain many of the same structural features that are present in the basin.

The invention relates to a heat storage type geothermal energy full-well-section dry well heat collection system, the system comprises a heat collection and supply unit and an underground heat collection unit, the underground heat collection unit comprises a center pipe, the center pipe is coaxially sleeved with a sleeve, the center pipe is inserted into and penetrates through a low-temperature layer and a high-temperature layer of a geothermal well, and the sleeve is inserted into the low-temperature layer. The heat collection system comprises a heating loop and a heat storage loop, and is further innovatively provided with a preheating and heat preservation loop, and the preheating and heat preservation loop is composed of a heat pump unit, an outer-layer water injection pump, an outer-layer water injection valve, an outer-layer channel, an inner-layer channel, an inner-layer water suction pump and a bypass valve. The system breaks the dependence of a geothermal heating building group on a hydrothermal geothermal heating system, dry geothermal wells without water or with less water yield can be converted into a single-well mining system, each geothermal well is fully utilized, and the number of the geothermal wells can be reduced under the same heating condition, so that the initial investment of the geothermal heating system is reduced, and the economic advantage highlighting.

The invention discloses a dewatering treatment method for a steeply inclined strip-shaped interbed composite stratum foundation pit. The dewatering treatment method is characterized in that an open-cut hall shallow pit is included, an open-cut hall deep pit is included, a station shallow pit is included, a deep shallow pit boundary is included, an end well deep pit area is included, a rail-crossing cable deepening area is included, a water collection pit is included, an underground diaphragm wall is included, inner limestone fracture grouting is carried out, wall bottom limestone fracture grouting is carried out, a pressure reduction well is included, a drainage well is included, a confined water observation well serving as an emergency recharge well is included, and a down-turning beam pit groove is included. The dewatering treatment method is particularly suitable for underground water treatment of the composite stratum foundation pit with upper old city miscellaneous fill, middle hard plastic clay and lower bed rock. It is summarized that the dewatering treatment method can achieve total closing, partial grouting, upper drainage, lower pressure reduction, bottom collection and drainage and external measurement and irrigation. The dewatering treatment method can reduce the number of dewatering wells and the water pumping amount, and the construction period and cost are saved;and meanwhile, the safety of the foundation pit and the surrounding environment can be guaranteed, and good economic and safety benefits are obtained.

The invention discloses a shaft sinking water disaster prevention and control method. The specific subsidy mainly comprises the steps of well bottom surrounding roadway tunneling, water inflow prediction, well bottom temporary drainage system construction, underground upward vertical drainage hole drilling, underground drainage, tunneling of a shaft penetrating through a water-bearing layer, drainage hole closing and well bottom surrounding roadway filling. And in the shaft sinking process, the underground drainage holes can effectively drain the water in the aquifer in advance, dry well drilling is achieved, and it is guaranteed that no water disaster accident occurs in the shaft sinking process.

The invention discloses a deceleration transmission mechanism dedicated to hygienic stirring, which comprises a casing composed of an upper box body and a lower box body, an input shaft equipped with a driving gear, an output shaft equipped with a driven gear, the driving gear and the driven gear Gear meshing is used to drive the output shaft to rotate. The lower box has a dry well casing cast integrally with it. An oil storage tank is formed between the dry well casing and the lower box. The driving gear and the driven gear are placed in the oil storage tank. The dry well Bearings are installed on the outer wall of the sleeve, and the driven gear is installed on the dry well casing through the bearing. The driven gear is connected to the output shaft through the output shaft support arm. The output shaft support arm includes a gear connection part connected to the upper end of the driven gear, an extension The support part and the transition part that fit closely with the upper end of the output shaft into the inner diameter of the dry well casing. The reduction transmission mechanism has the advantages of small size, simple structure, good oil leakage prevention effect and the like.

The invention relates to a draining and dewatering system, in particular to a sludge soil draining and dewatering system and a construction method. The sludge soil draining and dewatering system comprises sand-containing water flow subsystems, a high-pressure rotary spraying subsystem and an draining well subsystem; a plurality of sand-containing water flow subsystems are arranged around the drainage well subsystem and are respectively connected with the high-pressure rotary spraying subsystem; sludge soil is replaced by sand-containing water through the high-pressure rotary spraying subsystem, so that a horizontal drainage body is formed; the high-pressure rotary spraying subsystem comprises a plurality of pipes, a nozzle is arranged at the bottom of the high-pressure rotary spraying subsystem, and the upper part of the high-pressure rotary spraying subsystem is respectively connected with a water pump, an air compressor and a vacuum pump; the sand-containing water flow subsystem comprises a sand-containing water pump and a sand-containing water bucket connected with the multiple pipes through the sand-containing water pump; the drainage well subsystem comprises a drainage well, a drainage pump is arranged in the drainage well, and water permeable holes are formed in the side wall of the drainage well. Compared with the prior art, the sludge soil is replaced with a soil body with good permeability through sand-containing water preparation, high-pressure water flushing, high-pressure rotary spraying, horizontal drainage and the like, permeation and collection of underground water are facilitated, and then the purpose of drainage and dewatering is effectively achieved through the drainage well.

The invention discloses a method and a device for distinguishing exploratory well types by a weighted mahalanobis distance with optimized weight. The method comprises the following steps: respectively acquiring geological factor parameters of each well in an oil-gas well set and a dry well set; calculating an oil and gas well parameter mean vector and an oil and gas well parameter covariance matrix, and calculating a dry well parameter mean vector and a dry well parameter covariance matrix; generating a weighted mahalanobis distance discrimination model according to the oil and gas well parameter mean vector, the oil and gas well parameter covariance matrix, the dry well parameter mean vector, the dry well parameter covariance matrix and a preset weight diagonal matrix; optimizing and adjusting the weight of each geological factor parameter in the weight diagonal matrix continuously, so that the discriminating error rate of the generated weighted mahalanobis distance discriminating model on the oil and gas well set and the dry well set is the lowest, and the weighted mahalanobis distance discriminating model with the optimized weight is obtained. According to the invention, the exploratory well type discrimination precision and the use efficiency are improved.

The invention relates to a retaining wall drainage method and a retaining wall drainage system. The retaining wall drainage method comprises the following steps that when an original drainage hole in a retaining wall is blocked, a drainage well is arranged in a soil body blocked by the retaining wall along the longitudinal direction; the originally blocked water drainage hole is selected as a foundation hole, a water guide pipe is inserted into the foundation hole, and the water guide pipe is anchored into the drainage well, so that the water guide pipe can guide out water in the drainage well; therefore, the purpose of draining is achieved, and water drainage capacity of the retaining wall is recovered. Moreover, in the process of recovering the water drainage capacity of the retaining wall, and the originally blocked water drainage hole is directly used as the foundation hole, so that the cost required for recovering the water drainage capacity of the retaining wall is effectively reduced, and meanwhile, the whole process is simpler and easier to implement. Moreover, by adopting the drainage well and the water guide pipe, the water drainage capacity of the retaining wall can be recovered for a long time, and the retaining wall is not easy to block.

The invention provides a miniature open caisson prefabricated moulding bed construction method for a silt and drift sand area rich in underground water, and belongs to the technical field of buildingconstruction. A miniature open caisson type reinforced concrete moulding bed and a corresponding key construction method are adopted to realize water-wet operation construction of a small shallow foundation pit or an in-pit pit. The construction method integrates a foundation pit supporting function, a foundation pit brick moulding bed function and an inverted filter drainage well function, the construction process is simple and safe, the manufacturing cost is low, a large amount of dewatering measure cost can be saved, and the construction period is shortened. Compared with a traditional process of dewatering and draining underground water at first, then excavating a foundation pit and building a brick moulding bed, an enclosure and moulding bed system has the advantages that the construction process steps are obviously reduced, the construction progress is accelerated, and the structural concrete quality is improved; the problems that in a traditional local deep pit partial bottom plate deep pit construction method, the number of technological steps is large, the construction progress is slow, the construction quality is poor, and potential safety hazards exist are solved.