A cuttings collection device

Abstract

This invention belongs to the field of geological exploration technology, specifically relating to a cuttings collection device. The cuttings collection device includes: a sand-receiving box with openings at its upper and front ends; a sand-receiving container with an operating window on its side; and a sorting mechanism located at the upper end of the sand-receiving box, including at least one sand-discharging trough and at least one sand-guiding trough. The sand-discharging trough discharges some cuttings from the front opening of the sand-receiving box, and the sand-guiding trough guides some cuttings from the upper opening of the sand-receiving box into the sand-receiving container. This invention, by setting up sand-guiding and sand-discharging troughs, can automatically sort cuttings. By promptly discharging excess cuttings, it ensures that the sand-receiving container can hold cuttings from various layers within a unit depth with good continuity, avoiding arbitrariness in human operation and ensuring the authenticity of the formation represented by the cuttings. Using this invention eliminates the need for manual cuttings separation, reducing the labor intensity of operators and improving work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of geological exploration technology, specifically, it relates to a rock cuttings collection device. Background Technology

[0002] During drilling, the rock fragments broken up by the drill bit at the bottom of the well are called cuttings. These fragments are continuously returned to the surface with the circulation of drilling fluid. Cuttings are a direct visual indicator of formation lithology and oil and gas reservoirs. Sampling is required at specific depth intervals, with depth correction based on the cuttings' arrival time. Each batch of mixed samples is sorted, excluding collapsed rock fragments, and then subjected to visual or microscopic geological observation, description, and identification. The mass or volume percentage of each type of cuttings sample is calculated to determine the rock type at the sampling depth. Combined with other data, a downhole cuttings formation profile is created. The prerequisite for this work is accurate cuttings retrieval, meaning that cuttings must be retrieved precisely according to the sampling intervals and arrival times.

[0003] During on-site construction, the normal working procedure is to use a sand-collecting basin below the vibrating screen to collect rock cuttings. The sand-collecting basin is a rectangular or circular structure. A rectangular sand-collecting basin is typically a strip-shaped basin with a length of 400mm, a width of 200mm, and a height of 180mm; a circular sand-collecting basin is typically a conical basin with an upper diameter of 350mm, a lower diameter of 250mm, and a height of 150mm. The sand-collecting basin is placed below the outlet of the vibrating screen. The volume of the sand-collecting basin cannot guarantee that all the rock cuttings generated per unit depth can be collected. Because the sand-collecting basin is not easily moved, and given the requirements for continuous and accurate rock cuttings collection, it is necessary to ensure that the sand-collecting basin contains rock cuttings from all layers within a unit depth. Therefore, when the sand-collecting basin is full of rock cuttings, it is necessary to manually remove the rock cuttings using a two-part or four-part method. Before removal, it is also necessary to ensure that the rock cuttings in the sand-collecting basin are thoroughly mixed. The accumulation rate of rock cuttings in the sand-collecting basin increases with the drilling speed, so continuous segmentation and mixing are required. Since artificial rock cutting is a non-intermittent operation, it lacks continuity. If not controlled in a timely manner, it will affect the continuity of rock cutting collection, thereby reducing the true representativeness of the rock cuttings to the strata. Summary of the Invention

[0004] To address the technical problems described above, this invention aims to provide a rock cuttings collection device that can segment and collect rock cuttings in real time, ensuring the authenticity of the rock cuttings' representation of the geological formation.

[0005] According to the present invention, a rock cuttings receiving device is provided for receiving rock cuttings falling from a vibrating screen, comprising:

[0006] A sand receiving box, wherein the upper end and the front end of the sand receiving box are configured to be open;

[0007] A sand receiving box is provided with an operation window on the side of the sand receiving box, and the sand receiving box is placed inside the sand receiving box through the operation window;

[0008] The sorting mechanism installed at the upper end of the sand receiving box includes at least one sand discharge trough and at least one sand guide trough. The sand discharge trough discharges some rock debris from the front opening of the sand receiving box, and the sand guide trough guides some rock debris from the upper opening of the sand receiving box into the sand receiving box.

[0009] In one specific embodiment, a folding plate is provided at the top edge of the sand receiving box, which evenly disperses the rock debris falling from the vibrating screen onto the sand discharge trough and the sand guide trough.

[0010] In one specific embodiment, the folding plate is hinged to the sand receiving box via a hinge.

[0011] In one specific embodiment, a first torsion spring is also provided between the folding plate and the sand receiving box, and the folding plate abuts against the outlet end of the vibrating screen under the action of the first torsion spring.

[0012] In one specific embodiment, the ends of the sand discharge groove and the sand guide groove near the folding plate are connected to the sand receiving box via a second torsion spring, the sand discharge groove extends out of the sand receiving box, and the sand guide groove is located inside the sand receiving box.

[0013] In one specific embodiment, the total width of the sand discharge groove and the sand guide groove is equal to the width of the folded plate.

[0014] In one specific embodiment, a slope plate is provided on one side of the sand receiving box, and a sand outlet is provided on the side of the sand receiving box where the slope plate is provided, the sand outlet being located above the slope plate.

[0015] In one specific embodiment, a sand discharge port is provided at the bottom of the sand receiving box, and an overflow trough is provided on the side of the bottom of the sand receiving box away from the slope plate. The mud discharged through the overflow trough can be discharged from the sand receiving box through the sand discharge port.

[0016] In one specific embodiment, multiple bottom supports and multiple side supports are respectively provided at the bottom and sides of the sand receiving box. The bottom supports and the side supports are used to connect with other supports, fix the sand receiving box, and enable the sand receiving box to vibrate.

[0017] In one specific embodiment, the bottom support includes a sleeve disposed at the bottom of the sand receiving box, a compression spring, and a fixing part for connecting with other supports. The fixing part is slidably engaged with the sleeve, and the compression spring is located between the fixing part and the sleeve.

[0018] The side bracing is made of elastic material.

[0019] Compared with the prior art, the advantages of this application are as follows.

[0020] This invention, by incorporating sand-guiding and sand-discharging channels, enables automatic sorting of rock cuttings. By promptly discharging excess rock cuttings, it ensures that the receiving box can hold rock cuttings from all layers within a unit depth with good continuity, avoiding arbitrariness caused by human operation and guaranteeing the authenticity of the rock cuttings' stratigraphic representation. Using this invention eliminates the need for manual rock cuttings separation, reducing the labor intensity of operators and improving operational efficiency. Attached Figure Description

[0021] The present invention will now be described with reference to the accompanying drawings.

[0022] Figure 1 A schematic diagram of one embodiment of the cuttings collection device according to the present invention is shown;

[0023] Figure 2 A schematic diagram of one embodiment of the sand receiving box according to the present invention is shown;

[0024] Figure 3 A schematic diagram of one embodiment of the second torsion spring according to the present invention is shown;

[0025] Figure 4 A schematic diagram of one embodiment of the base support according to the present invention is shown;

[0026] Figure 5 A schematic diagram of one embodiment of the side brace according to the present invention is shown.

[0027] In the diagram: 1. Sand receiving box; 11. Operating window; 12. Sand discharge port; 2. Sorting mechanism; 21. Sand discharge trough; 22. Sand guide trough; 23. Second torsion spring; 231. Support tube; 232. Support box; 3. Folding plate; 31. Hinge; 32. First torsion spring; 4. Sand receiving box; 41. Slope plate; 42. Sand outlet; 43. Overflow trough; 5. Bottom support; 51. Sleeve; 52. Compression spring; 53. Fixing part; 6. Side support; 61. Base; 62. Rubber head; 100. Rock cuttings receiving device.

[0028] In this application, all drawings are schematic and are used only to illustrate the principles of the invention, and are not drawn to scale. Detailed Implementation

[0029] The invention will now be described with reference to the accompanying drawings.

[0030] In this application, it should be noted that the directional terms or qualifiers used, such as "up," "down," "front," "back," "left," and "right," are all specific to the referenced material. Figure 1In other words, they are not used to define the absolute position of the components involved, but can vary depending on the specific circumstances.

[0031] Figure 1 A schematic diagram of one embodiment of the rock cuttings collection device 100 according to the present invention is shown; Figure 2 A schematic diagram of one embodiment of the sand receiving box 4 according to the present invention is shown; Figure 3 A schematic diagram of one embodiment of the second torsion spring 23 according to the present invention is shown; Figure 4 A schematic diagram of one embodiment of the base support 5 according to the present invention is shown; Figure 5 A schematic diagram of one embodiment of the side brace 6 according to the present invention is shown.

[0032] In one embodiment of the present invention, a rock cuttings receiving device 100 is provided, including a sand receiving box 1 placed below the outlet of a vibrating screen (not shown in the figure), a sand receiving container 4 disposed inside the sand receiving box 1, and a sorting mechanism 2 for separating rock cuttings. The sand receiving box 1 is a cuboid with an internal length of 480mm × internal width of 250mm × height of 200mm × wall thickness of 3mm. The front and top of the sand receiving box 1 are open, and the front end of the top is reinforced with a steel strip of 480mm length × width × thickness of 3mm to strengthen the structural strength of the sand receiving box 1. Windows of 150mm length × height 120mm are provided at the lower center of the side plates on both sides of the sand receiving box 1 as operating windows 11. The operating windows 11 on both side plates are continuous, allowing the sand receiving container 4 to pass through the sand receiving box 1. The sorting mechanism 2 is located at the upper rear end of the sand receiving box 1. The sorting mechanism 2 includes at least one sand discharge trough 21 and at least one sand guide trough 22. The sand guide trough 22 and sand discharge trough 21 can be combined and arranged according to actual conditions to accommodate different sand receiving volumes. The sand discharge trough 21 discharges some rock fragments from the front opening of the sand receiving box 1, and the sand guide trough 22 guides some rock fragments from the upper opening of the sand receiving box 1 into the sand receiving box 4. In this embodiment, two sand discharge troughs 21 and two sand guide troughs 22 are respectively provided, evenly distributed along the upper edge of the back plate of the sand receiving box 1. With this arrangement, half of the rock fragments flowing out from the vibrating screen are discharged through the sand discharge trough 21, and the other half enter the sand receiving box 4 through the sand guide trough 22, thereby automatically completing the sorting of rock fragments and ensuring that the sand receiving box 4 can contain rock fragments from various layers at a unit depth.

[0033] like Figure 1 As shown, in a specific embodiment, the sand discharge trough 21 is an arc-shaped plate, installed 50mm below the top of the back plate of the sand receiving box 1, with a length of 250mm × width of 115mm × arc of 30°, and is formed by bending a steel plate with a wall thickness of 2mm. It is connected to the back plate of the sand receiving box 1 by a double torsion spring as the second torsion spring 23. Figure 1 and Figure 3As shown, the second torsion spring 23 is fixed to the sand discharge trough 21 by the support bracket 231 and to the back plate of the sand receiving box 1 by the support box 232. The front end of the sand discharge trough 21 extends beyond the sand receiving box 4. A sand guide trough 22 is installed next to the sand discharge trough 21. One sand discharge trough 21 and one sand guide trough 22 are arranged in this way, with four arranged in the sand receiving box 1. The sand guide trough 22 is an arc-shaped plate, installed 50mm below the top of the back plate of the sand receiving box 1. It is 125mm long × 115mm wide × 30° arc, and is made of steel plate with a wall thickness of 2mm bent. It is also connected to the sand receiving box 1 by the second torsion spring 23. The rock debris guided by the folding plate 3 drips into the sand discharge trough 21 and the sand guide trough 22 and moves forward. As the weight increases, the sand discharge trough 21 and the sand guide trough 22 tilt downward. Since the amount of rock cuttings discharged at different unit stratum depths is not consistent, under this setting, if the amount of rock cuttings discharged is small, then when the weight of the rock cuttings on the sand discharge trough 21 and sand guide trough 22 is insufficient to tilt the sand discharge trough 21 and sand guide trough 22, this part of the rock cuttings will remain on the sand discharge trough 21 and sand guide trough 22. If the amount of rock cuttings in the sand receiving box 4 is insufficient, some of the rock cuttings on the sand discharge trough 21 and sand guide trough 22 can be put into the sand receiving box 4.

[0034] In a preferred embodiment, a folding plate 3 is installed on the rear top edge of the sand receiving box 1, which evenly disperses the rock debris falling from the vibrating screen onto the sand discharge trough 21 and the sand guide trough 22.

[0035] In one specific embodiment, the folding plate 3 is hinged to the sand receiving box 1 via a hinge 31. A first torsion spring 32 is also provided between the folding plate 3 and the sand receiving box 1. The folding plate 3 abuts against the outlet end of the vibrating screen under the action of the first torsion spring 32.

[0036] In this embodiment, a steel plate measuring 480mm in length, 60mm in width, and 2mm in thickness is connected to the top rear side of the sand receiving box 1 using a hinge 31 as a folding plate 3. Two 120° single torsion springs serve as the first torsion spring 32, supporting the folding plate 3 and the sand receiving box 1. The first torsion spring 32 supports the folding plate 3, which overlaps on the vibrating screen to form a vibrating joint. The total width of the sand discharge trough 21 and the sand guide trough 22 is equal to the width of the folding plate 3 and the width of the back plate of the sand receiving box 1. Rock cuttings are guided into the sand discharge trough 21 and the sand guide trough 22 along the folding plate 3.

[0037] like Figure 2 As shown, in a preferred embodiment, a handle is installed on the upper part of each of the two side plates of the sand receiving box 1 for lifting and moving the sand receiving box 1. Multiple slots, 400mm long × 30mm wide, are cut into the bottom plate of the sand receiving box 1 as sand discharge ports 12, and these discharge ports 12 are arranged at equal intervals. A strip 50mm wide × 250mm long is longitudinally welded to the bottom center of the bottom plate of the sand receiving box 1 as a reinforcing rib of the bottom plate.

[0038] According to the present invention, the number of sand discharge channels 21 and sand guide channels 22 can be changed according to actual conditions.

[0039] like Figure 2 As shown, in a specific embodiment, a slope plate 41 is provided on the left side of the sand receiving box 4, and a sand outlet 42 is provided on the side of the sand receiving box 4 where the slope plate 41 is provided, with the sand outlet 42 located above the slope plate 41. A sand discharge port 12 is provided at the bottom of the sand receiving box 1, and an overflow trough 43 is provided on the bottom side of the sand receiving box 4 away from the slope plate 41. The mud discharged through the overflow trough 43 can be discharged from the sand receiving box 1 through the sand discharge port 12. Specifically, the sand receiving box 4 has an internal length of 480mm × internal width of 140mm × height of 115mm and is made of folded steel plate. An end lug is provided on each side of the sand receiving box 4 for holding the operating window 11 that enters the sand receiving box 1. Two slots with a width of 5mm and a length of 120mm are longitudinally opened on the right side of the bottom plate of the sand receiving box 4 as overflow troughs 43, through which the mud flows out, leaving only rock debris inside the sand receiving box 4. A steel plate measuring 140mm in length, 100mm in width, and 2mm in wall thickness is welded to the left end of the sand receiving box at a 20° angle to the base plate. This plate serves as a ramp 41. The ramp 41 allows rock cuttings to roll off to the right side in a timely manner, preventing them from overflowing from the sand outlet 42. A sand outlet 42 measuring 140mm in length, 80mm in height, and 50mm in width is cut at the left end of the sand receiving box. By holding the two end ears of the sand receiving box and tilting it towards the sand outlet 42, the rock cuttings can be poured out of the sand receiving box.

[0040] In a preferred embodiment, a plurality of bottom supports 5 and a plurality of side supports 6 are respectively provided at the bottom and sides of the sand receiving box 1. The bottom supports 5 and side supports 6 are used to connect with other supports, fix the sand receiving box 1, and enable the sand receiving box 1 to vibrate.

[0041] like Figure 4 As shown, in one specific embodiment, the base support 5 includes a sleeve 51 disposed at the bottom of the sand receiving box 1, a compression spring 52, and a fixing part 53 for connecting with other supports. The fixing part 53 slides with the sleeve 51, and the compression spring 52 is located between the fixing part 53 and the sleeve 51. In this embodiment, there are four base supports 5, respectively disposed at the four corners of the bottom of the sand receiving box 1. The lower part of the fixing part 53 is cut into an arc shape to serve as a seat, which is snapped onto other tubular supports.

[0042] like Figure 5As shown, in one specific embodiment, the side support 6 is made of an elastic material. In this embodiment, the side support 6 is made of a highly elastic rubber column. One end of the side support 6 is a base 61, and the other end is a rubber head 62. A fixing hole is provided at the central axis of the base 61, and a metal wire tube is nested in the fixing hole. A hole is made in the sand receiving box 1, and the base 61 is fixed to the sand receiving box 1 with screws. A fixing hole is provided radially on the rubber head 62, and a metal wire tube is nested in the fixing hole. The rubber head 62 is fitted into other cylindrical supports by means of a sleeve, and bolts are used to connect them through the fixing holes. The side support 6 is used to assist in fixing the sand receiving box 1 and can generate micro-vibration.

[0043] According to the present invention, the support can be a pre-embedded component embedded in the ground.

[0044] The sand receiving box 1 is elastically connected to other supports via a bottom support 5, and the side supports 6 assist in forming an elastic vibrating body. Rock chips falling from the vibrating screen flow down the folded plate 3 and press against the second torsion spring 23 on the sand discharge trough 21 and the sand guide trough 22. Excess rock chips are discharged out of the sand discharge trough 21, and a limited amount of rock chips enters the sand receiving box 1 through the sand guide trough 22, forming a sorted sand receiving system. The sand receiving box 4 is inserted into the operation window 11 of the sand receiving box 1, and can be pulled out to extract the rock chips inside. The sand guide trough 22 and the sand discharge trough 21 can be combined and arranged according to actual conditions to meet the needs of different sand receiving volumes. The sand discharge port 12 discharges excess rock chips, ensuring that rock chips do not accumulate in the sand receiving box 1. The entire sand receiving box 1 can be vibrated together with the vibrating screen to form a vibrating sand receiving structure.

[0045] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rock cuttings receiving device for collecting rock cuttings falling from a vibrating screen, characterized in that, include: A sand receiving box (1) is provided with an opening at its upper end and front end. A sand receiving box (4) is provided with an operation window (11) on the side of the sand receiving box (1), and the sand receiving box (4) is placed inside the sand receiving box (1) through the operation window (11); The sorting mechanism (2) is provided at the upper end of the sand receiving box (1). The sorting mechanism (2) includes at least one sand discharge trough (21) and at least one sand guide trough (22). The sand discharge trough (21) discharges some rock debris from the front opening of the sand receiving box (1), and the sand guide trough (22) guides some rock debris from the upper opening of the sand receiving box (1) into the sand receiving box (4). A folding plate (3) is provided at the top edge of the sand receiving box (1). The folding plate (3) evenly disperses the rock debris falling from the vibrating screen onto the sand discharge trough (21) and the sand guide trough (22). The ends of the sand discharge trough (21) and the sand guide trough (22) near the folding plate (3) are connected to the sand receiving box (1) via a second torsion spring (23). The second torsion spring (23) is fixed to the sand discharge trough (21) via a support tube (231). The second torsion spring (23) is fixed to the back plate of the sand receiving box via a support box (232). The sand discharge trough (21) extends beyond the sand receiving box (4).

2. The cuttings receiving device according to claim 1, characterized in that, The folding plate (3) is hinged to the sand receiving box (1) via a hinge (31).

3. The cuttings receiving device according to claim 2, characterized in that, A first torsion spring (32) is also provided between the folding plate (3) and the sand receiving box (1), and the folding plate (3) abuts against the outlet end of the vibrating screen under the action of the first torsion spring (32).

4. The cuttings receiving device according to claim 1, characterized in that, The total width of the sand discharge channel (21) and the sand guide channel (22) is equal to the width of the folded plate (3).

5. The cuttings receiving device according to any one of claims 1 to 4, characterized in that, A slope plate (41) is provided on one side of the sand receiving box (4), and a sand outlet (42) is provided on the side of the sand receiving box (4) where the slope plate (41) is provided. The sand outlet (42) is located above the slope plate (41).

6. The cuttings receiving device according to claim 5, characterized in that, A sand discharge port (12) is provided at the bottom of the sand receiving box (1), and an overflow trough (43) is provided on the side of the bottom of the sand receiving box (4) away from the slope plate (41). The mud discharged through the overflow trough (43) can be discharged from the sand receiving box (1) through the sand discharge port (12).

7. The cuttings receiving device according to claim 6, characterized in that, Multiple bottom supports (5) and multiple side supports (6) are provided at the bottom and sides of the sand receiving box (1). The bottom supports (5) and the side supports (6) are used to connect with other supports, fix the sand receiving box (1), and enable the sand receiving box (1) to vibrate.

8. The cuttings receiving device according to claim 7, characterized in that, The bottom support (5) includes a sleeve (51), a compression spring (52) disposed at the bottom of the sand receiving box (1) and a fixing part (53) for connecting with other supports. The fixing part (53) is slidably engaged with the sleeve (51), and the compression spring (52) is located between the fixing part (53) and the sleeve (51). The side brace (6) is made of elastic material.

Images