Green drilling mud circulating device

Abstract

The utility model belongs to the technical field of drilling, and provides a green drilling mud circulating device which comprises a double-box iron tank, a filter sponge and a detachable cylinder, the double-box iron tank is formed by welding thick steel plates, the middle of the double-box iron tank is divided into a tank A and a tank B through an iron plate, a 1cm gap is reserved at the bottom of the double-box iron tank, a circular through hole is machined in the bottom of the tank A, and the detachable cylinder is connected with the circular through hole. A water stop strip is further arranged at the joint; a slurry output pipe is connected in the groove B and is connected with a slurry pump; the shape of the filter sponge is consistent with that of the groove A, and the filter sponge can sleeve the detachable cylinder to be placed at the bottom of the groove A; through the design of the double-box iron tank, sand grains, rock chips and the like brought by slurry circulation in the drilling process are filtered through the filtering sponge, the sand content of the slurry is reduced, the performance of the slurry is improved, cyclic utilization and green emission of the slurry are achieved, the slurry reserved in the tank B can be used for next drilling, the drilling efficiency is improved, and the drilling cost is reduced. And the drilling safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling, and relates to a mud recycling and green discharge device, in particular to a green drilling mud circulation device. Background Art

[0002] Engineering exploration drilling is one of the most reliable and widely used methods to explore underground geological conditions by drilling directly into underground rock formations to obtain geotechnical data required for engineering geology. Through engineering drilling, drilling holes can identify and describe stratum information, take soil and rock core samples, and conduct in-situ tests such as standard penetration tests and shear wave velocity tests. During the engineering exploration drilling process, in addition to the clay layer and completed rock layer that can maintain the stability of the borehole wall, wall protection measures should be taken.

[0003] As a flushing fluid, mud plays the role of wall protection, carrying, suspending and removing rock powder, lubricating drill tools, cooling drill bits, plugging leaks and other functions during the drilling process. The quality of mud performance will directly affect drilling efficiency and safe production. The raw materials for engineering survey drilling slurry are mainly clays with good plasticity and low sand content, such as kaolin, bentonite, laterite, and clay. The sand content in the mud refers to the content of sand and other particles larger than 0.02mm in the mud. Generally, a colloid rate meter is used, and the sand content is generally required not to exceed 4%. The surface sand layer in coastal areas is thick. When drilling with a drilling rig, the mud wall protection method is adopted. The mud will inevitably carry a large amount of sand or other rock debris, which will affect the performance of the mud. In the sandy land, the mud circulation pit is artificially excavated. The sand is loose and the pit wall is easy to collapse. After the engineering drilling is completed, the mud is generally difficult to recycle, and it is difficult to clean up and discharge in the later stage, which will cause environmental pollution. In addition, for some hardened roads or engineering survey drillings that need to restore the original terrain, it is also inconvenient to manually excavate mud circulation tanks during the drilling process. Utility Model Content

[0004] The utility model aims to provide a green drilling mud circulation device, which can avoid repeated manual excavation of mud circulation pits, improve mud performance and mud recycling, and finally achieve green discharge.

[0005] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0006] A green drilling mud circulation device comprises a double-box iron trough, a filter sponge and a detachable cylinder. The double-box iron trough is welded from thick steel plates and is divided into a trough A and a trough B by an iron plate in the middle. A 1 cm gap is reserved at the bottom of the iron plate. A circular through hole is processed at the bottom of trough A for connecting the detachable cylinder. A circular water stop strip is also provided at the connection between the detachable cylinder and the circular through hole for sealing. A mud output pipe is connected inside trough B, and a mud pump is connected to the mud output pipe. The filter sponge has the same shape as trough A, and a hole matching the detachable cylinder is processed in the center, so that the filter sponge can be put on the detachable cylinder and placed at the bottom of trough A.

[0007] Furthermore, the filter sponge includes coarse-grained sponge and high-density sponge; the coarse-grained sponge has a thickness of 2-3 cm and a filter pore size of 0.25 mm to 0.5 mm, and is used for mud circulation filtration; the high-density sponge has a thickness of 10-12 cm and a filter pore size of less than or equal to 5 μm, and is used for filtration before mud discharge.

[0008] Furthermore, both sides of the double-box iron trough are also processed with hand-holding ears for holding the double-box iron trough.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The double-box iron trough design can avoid repeated manual digging of mud circulation pits in engineering survey and drilling on hardened roads or where the original terrain needs to be restored, saving manpower and construction time.

[0011] The coarse-grained sponge is used to filter the sand and rock debris brought up by the mud circulation during the drilling process, thereby reducing the viscous substances in the mud, reducing the sand content of the mud, improving the mud liquid performance, and realizing the recycling of the mud. The mud retained in the slot B can be used for the next drilling, thereby improving the drilling efficiency and ensuring the drilling safety.

[0012] The mud is filtered through high-density sponge to achieve green discharge of mud after drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the built-in coarse-grained sponge in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the built-in high-density sponge in the utility model;

[0016] In the figure, 1, double-box iron trough; 101, trough A; 102, trough B; 2, coarse-grained sponge; 3, high-density sponge; 4, detachable cylinder; 5, iron plate; 6, gap; 7, circular through hole; 8, water stop strip; 9, mud output pipe; 10, hand-held ear. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] A green drilling mud circulation device, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a double-box iron trough 1, a coarse-grained sponge 2, a high-density sponge 3, and a detachable cylinder 4. The double-box iron trough 1 is welded from a 2mm thick steel plate, and is divided into a trough A101 and a trough B102 by an iron plate 5 in the middle. A 1cm gap 6 is reserved at the bottom of the iron plate 5. A circular through hole is processed at the bottom of the trough A101 for connecting the detachable cylinder 4. A circular water stop strip 8 is also provided at the connection between the detachable cylinder 4 and the circular through hole for sealing; a mud output pipe 9 is connected to the groove B102, and the mud output pipe 9 is also connected to a mud pump.

[0019] The thickness of the coarse-grained sponge is 2-3cm, and the filtering pore size is 0.25mm~0.5mm; the thickness of the high-density sponge is 10-12cm, and the filtering pore size is less than or equal to 5μm; the shapes of the coarse-grained sponge 2 and the high-density sponge 3 are consistent with the groove A101, and the centers of the coarse-grained sponge 2 and the high-density sponge 3 are processed with holes that match the size of the detachable cylinder 4. According to the drilling needs, the coarse-grained sponge 2 or the high-density sponge 3 is selected, put on the detachable cylinder 4 and put into the bottom of the groove A101.

[0020] Handle ears 10 are also processed on both sides of the double-box iron trough to facilitate users to carry it.

[0021] When the exploration drilling rig is drilling, the device is placed above the drilling position, the circular through hole at the bottom of the groove A101 is aligned with the drilling position, and the detachable cylinder 4 is pressed into the drilling hole in the circular through hole, and the circular water stop strip 8 is used to seal it. The coarse-grained sponge 2 is sleeved on the detachable cylinder 4 and placed in the groove A101. During the drilling rig construction, the mud in the borehole overflows through the detachable cylinder 4 and flows into the groove A101. The coarse-grained sponge 2 in the groove A101 filters the sand and rock debris brought up by the mud circulation during the drilling process, reduces the viscous substances in the mud, and improves the performance of the mud. The mud flows to the groove B102 through the gap 6 reserved under the iron plate 5, and then the mud output pipe 9 and the mud pump are used to lift the mud in the groove B102 and pump it into the drill pipe, so as to realize the recycling of mud, improve the drilling efficiency, and ensure the safety of drilling.

[0022] After a hole is drilled, the construction worker can lift the double-box iron trough by the hand-held ear 10 and move it to the next drilling position for continued use; when the drilling rig is completed, the coarse-grained sponge 2 in the trough A101 is replaced with a high-density sponge 3, and the mud in the borehole overflows through the positive circulation and flows into the trough A101 through the detachable cylinder 4. After being filtered by the high-density sponge 3, the mud liquid flows to the trough B102 through the reserved gap 6 under the iron plate 5, and is then discharged from the mud output pipe 9. Due to the strong filtering effect of the high-density sponge 3, the discharged mud liquid will not have an impact on the environment, thus achieving green emissions.

Claims

1. A green drilling mud circulation device, characterized in that: It includes a double-box iron trough, a filter sponge, and a detachable cylinder. The double-box iron trough is welded from thick steel plates and is divided into trough A and trough B by an iron plate in the middle. A gap is reserved at the bottom of the iron plate. A circular through hole is processed at the bottom of trough A for connecting the detachable cylinder. A circular water stop strip is also provided at the connection between the detachable cylinder and the circular through hole. A mud output pipe is connected inside trough B, and a mud pump is connected to the mud output pipe. The shape of the filter sponge is consistent with that of trough A, and a hole matching the detachable cylinder is processed in the center. The filter sponge can be put on the detachable cylinder and placed at the bottom of trough A.

2. A green drilling mud circulation device according to claim 1, characterized in that: The gap reserved at the bottom of the iron plate is 1 cm.

3. The green drilling mud circulation device according to claim 1, characterized in that: The filter sponge includes coarse-grained sponge and high-density sponge. The coarse-grained sponge has a thickness of 2-3 cm and a filter pore size of 0.25 mm to 0.5 mm, and is used for mud circulation filtration; the high-density sponge has a thickness of 10-12 cm and a filter pore size of less than or equal to 5 μm, and is used for filtration before mud discharge.

4. The green drilling mud circulation device according to claim 1, characterized in that: Both sides of the double-box iron trough are also processed with hand-holding ears for carrying the double-box iron trough.

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