Rock debris receiving device

Abstract

The invention belongs to the technical field of geological exploration, and particularly relates to a rock debris receiving device. The rock debris receiving device comprises a sand receiving box, and the upper end and the front end of the sand receiving box are provided with openings; an operation window is arranged on the side surface of the sand receiving box; and the sorting mechanism is arranged at the upper end of the sand receiving box and comprises at least one sand discharging groove and at least one sand guiding groove, the sand discharging grooves discharge part of the rock debris from the opening in the front end of the sand receiving box, and the sand guiding grooves guide part of the rock debris into the sand receiving box from the opening in the upper end of the sand receiving box. By arranging the sand guide groove and the sand discharge groove, rock debris can be automatically sorted, it is guaranteed that the sand receiving box can contain rock debris of all layers within the unit depth in the mode that redundant rock debris is discharged in time, continuity is good, randomness of manual operation is avoided, and authenticity of rock debris stratum representation is guaranteed. After the device is used, the rock debris does not need to be cut manually, the labor intensity of operators is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, and in particular relates to a rock cuttings receiving device. Background Art

[0002] During the drilling process, the rock fragments drilled by the drill bit at the bottom of the well are called rock cuttings, which are continuously returned to the ground with the circulation of drilling fluid. Rock cuttings are intuitive materials for timely understanding of the lithology of the formation and the oil and gas layer. They need to be sampled at a certain depth interval and depth corrections are made according to the delay time of the rock cuttings. The mixed samples obtained each time are selected, and after excluding the collapsed rock blocks, geological observations, descriptions, and naming are carried out under the naked eye or microscope. The mass or volume percentage of various rock cutting samples is calculated respectively, and the rock type at the sampling depth is determined. In combination with other information, a rock cutting formation profile is made downhole. The premise of this work is the rock cuttings retrieval, that is, the rock cuttings must be accurately retrieved according to the sampling interval and delay time.

[0003] During the on-site construction process, the normal working mode is to use a sand receiving basin under the vibrating screen to collect rock cuttings. The sand receiving basin is a rectangular or circular structure. The rectangular sand receiving basin is generally a strip basin with a length of 400mm, a width of 200mm, and a height of 180mm; the circular sand receiving basin is generally a conical basin with an upper diameter of 350mm, a lower diameter of 250mm, and a height of 150mm. The sand receiving basin is placed below the outlet of the vibrating screen. The volume of the sand receiving basin cannot guarantee the full collection of rock cuttings produced per unit depth. Since the sand receiving basin is not easy to move, and in view of the requirements for the continuity and authenticity of rock cuttings collection, it is necessary to ensure that the sand receiving basin includes rock cuttings at all levels within the unit depth. Therefore, when the rock cuttings in the sand basin are full, it is necessary to manually use the binary or quartering method to remove the rock cuttings in the basin. Before removal, it is also necessary to ensure that the rock cuttings in the sand receiving basin are fully mixed. The accumulation speed of rock cuttings in the sand receiving basin increases with the increase of drilling speed, so it is necessary to continuously divide and mix. Since manual cuttings division is a non-timely and discontinuous operation and lacks continuity, untimely control will affect the continuity of cuttings collection, thereby reducing the true representativeness of the cuttings to the formation. Summary of the invention

[0004] In view of the technical problems mentioned above, the present invention aims to provide a rock cuttings receiving device, which can divide and receive rock cuttings in real time to ensure the authenticity of the rock cuttings in representing the formation.

[0005] According to the present invention, a rock cuttings receiving device is provided, which is used to receive 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, wherein an operation window is arranged on the side of the sand receiving box, and the sand receiving box is placed in the sand receiving box through the operation window;

[0008] A sorting mechanism is arranged at the upper end of the sand receiving box, and the sorting mechanism includes at least one sand discharge groove and at least one sand guide groove. The sand discharge groove discharges part of the rock cuttings from the front end opening of the sand receiving box, and the sand guide groove guides part of the rock cuttings from the upper end opening of the sand receiving box into the sand receiving box.

[0009] In a specific embodiment, a folding plate is provided at the top edge of the sand receiving box, and the folding plate evenly disperses the rock cuttings dropped from the vibrating screen to the sand discharge trough and the sand guide trough.

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

[0011] In a specific embodiment, a first torsion spring is further 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 a specific embodiment, one end of the sand discharge groove and the sand guide groove close to the folding plate is connected to the sand receiving box through a second torsion spring, the sand discharge groove extends out of the sand receiving box, and the sand guide groove is located in the sand receiving box.

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

[0014] In a specific embodiment, a ramp 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 ramp plate is provided, and the sand outlet is located above the ramp plate.

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

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

[0017] In a specific embodiment, the bottom support includes a sleeve, a compression spring and a fixing portion for connecting with other supports, the fixing portion is slidably matched with the sleeve, and the compression spring is located between the fixing portion and the sleeve;

[0018] The side supports are made of elastic material.

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

[0020] The present invention can automatically sort the rock cuttings by setting the sand guide groove and the sand discharge groove, and can ensure that the sand receiving box can contain the rock cuttings of each layer within the unit depth by timely discharging the excess rock cuttings, and the continuity is good, avoiding the arbitrariness of manual operation, and ensuring the authenticity of the rock cuttings stratum representation. After using the present invention, it is no longer necessary to manually split the rock cuttings, which reduces the labor intensity of the operator and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 A schematic diagram showing an embodiment of a cuttings receiving device according to the present invention;

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

[0024] Figure 3 A schematic diagram showing an embodiment of a second torsion spring according to the present invention;

[0025] Figure 4 A schematic diagram showing an embodiment of a bottom support according to the present invention is shown;

[0026] Figure 5 A schematic diagram of an embodiment of a side support according to the present invention is shown.

[0027] In the figure: 1. sand receiving box; 11. operating window; 12. sand outlet; 2. sorting mechanism; 21. sand discharge trough; 22. sand guide trough; 23. second torsion spring; 231. supporting tube; 232. supporting 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. cuttings receiving device.

[0028] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

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

[0030] In this application, it should be noted that the directional terms or qualifiers "upper", "lower", "front", "back", "left", "right", etc. used in this application are all directed to the referenced Figure 1They are not intended to define the absolute positions of the components involved, but may vary depending on the specific circumstances.

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

[0032] In one embodiment of the present invention, a rock cutting receiving device 100 is provided, comprising a sand receiving box 1 for placement below the outlet of a vibrating screen (not shown in the figure), a sand receiving box 4 arranged in the sand receiving box 1, and a sorting mechanism 2 for separating rock cuttings. The sand receiving box 1 is a rectangular parallelepiped, with an inner length of 480 mm, an inner width of 250 mm, a height of 200 mm, and a wall thickness of 3 mm. The front side and the top of the sand receiving box 1 are both open, and a steel plate strip with a length of 480 mm, a width of 50 mm, and a thickness of 3 mm is used as a connecting rib at the front end of the top to strengthen the structural strength of the sand receiving box 1. A window with a length of 150 mm and a height of 120 mm is provided at the center lower position of the side panels on the left and right sides of the sand receiving box 1 as an operating window 11. The operating windows 11 of the two side panels are connected, and the sand receiving box 4 can be inserted into the sand receiving box 1 through the operating window 11. The sorting mechanism 2 is arranged at the upper end of the rear side 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 the sand discharge trough 21 can be arranged in combination according to actual conditions to meet the needs of different sand receiving amounts. The sand discharge trough 21 discharges part of the rock chips from the front end opening of the sand receiving box 1, and the sand guide trough 22 guides part of the rock chips from the upper end 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, and are evenly distributed along the upper edge of the back plate of the sand receiving box 1. Under this setting, half of the rock chips flowing out of 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 the rock chips, ensuring that the sand receiving box 4 can include rock chips of each layer of unit depth.

[0033] like Figure 1 As shown, in a specific embodiment, the sand discharge groove 21 is an arc-shaped plate, which is 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 made of a steel plate with a wall thickness of 2mm. It is connected to the back plate of the sand receiving box 1 through 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 a bearing tube 231, and is fixed to the back plate of the sand receiving box 1 by a bearing box 232. The front end of the sand discharge trough 21 extends beyond the sand receiving box 4, and a sand guide trough 22 is installed next to the sand discharge trough 21, so that one sand discharge trough 21 and one sand guide trough 22 are arranged, and four are arranged in the sand receiving box 1. The sand guide trough 22 is an arc plate, which is installed 50mm below the top of the back plate of the sand receiving box 1, with a length of 125mm×width of 115mm×arc of 30°, and is formed by bending a steel plate with a wall thickness of 2mm. It is also connected to the sand receiving box 1 through the second torsion spring 23. The rock chips guided by the folding plate 3 drip into the sand discharge trough 21 and the sand guide trough 22 and move forward. As the weight increases, the sand discharge trough 21 and the sand guide trough 22 are tilted downward. Since the amount of rock cuttings discharged at each unit formation depth 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 the sand guide trough 22 is not enough to tilt the sand discharge trough 21 and the sand guide trough 22, this part of the rock cuttings will remain on the sand discharge trough 21 and the 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 the sand guide trough 22 can be placed in the sand receiving box 4.

[0034] In a preferred embodiment, a folding plate 3 is installed on the top edge of the rear side of the sand receiving box 1 , and the folding plate 3 evenly distributes the rock chips dropped from the vibrating screen to the sand discharge trough 21 and the sand guide trough 22 .

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

[0036] In this embodiment, a 480mm long×60mm wide×2mm thick steel plate is connected to the top of the rear side of the sand receiving box 1 by a hinge 31 as a folding plate 3, and two 120° single torsion springs are used as first torsion springs 32 to support the folding plate 3 and the sand receiving box 1. The first torsion spring 32 supports the folding plate 3, and the folding plate 3 is overlapped on the vibrating screen to form a vibrating joint body. The total width of the sand discharge groove 21 and the sand guide groove 22 is equal to the width of the folding plate 3, which is equal to the back plate width of the sand receiving box 1, and the rock chips are introduced into the sand discharge groove 21 and the sand guide groove 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 the two side plates of the sand receiving box 1 for lifting and carrying the sand receiving box 1. A plurality of 400mm long × 30mm wide slots are opened on the bottom plate of the sand receiving box 1 as sand discharge openings 12, and these sand discharge openings 12 are arranged at equal intervals. A 50mm wide × 250mm long strip is welded longitudinally at the bottom of the middle position of the bottom plate of the sand receiving box 1, which is used as a reinforcing rib of the bottom plate.

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

[0039] like Figure 2 As shown, in a specific embodiment, a ramp 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 ramp plate 41 is provided, and the sand outlet 42 is located above the ramp plate 41. A sand discharge port 12 is provided at the bottom of the sand receiving box 1, and a slurry overflow groove 43 is provided on the side of the bottom of the sand receiving box 4 away from the ramp plate 41, and the mud discharged through the slurry overflow groove 43 can be discharged from the sand receiving box 1 through the sand discharge port 12. Specifically, the sand receiving box 4 has an inner length of 480mm×inner width of 140mm×height of 115mm, and is folded with steel plates. An end ear is provided on each side of the sand receiving box 4, which is used to end the operation window 11 of the sand receiving box 1. Two slots with a width of 5mm×a length of 120mm are longitudinally opened on the right side of the bottom plate of the sand receiving box 4 as the slurry overflow groove 43, and the mud flows out of the slurry overflow groove 43, and only rock debris remains in the sand receiving box 4. A steel plate with a length of 140 mm, a width of 100 mm, and a wall thickness of 2 mm is welded at the left end of the sand receiving box at an angle of 20° to the bottom plate, and the plate is used as a ramp plate 41. The ramp plate 41 allows the rock chips to roll to the right in time to prevent the rock chips from overflowing from the sand outlet 42. A sand outlet 42 with a length of 140 mm, a height of 80 mm, and a width of 50 mm is opened at the left end of the sand receiving box 4. The end ears on both sides of the sand receiving box are held by hand and tilted toward one end of the sand outlet 42 to pour the rock chips 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 the side of the sand receiving box 1, and the bottom supports 5 and the side supports 6 are used to connect with other supports to fix the sand receiving box 1 and enable the sand receiving box 1 to vibrate.

[0041] like Figure 4 As shown, in a specific embodiment, the bottom support 5 includes a sleeve 51, a compression spring 52 and a fixing portion 53 for connecting with other supports, which are arranged at the bottom of the sand receiving box 1. The fixing portion 53 is slidably matched with the sleeve 51, and the compression spring 52 is located between the fixing portion 53 and the sleeve 51. In this embodiment, the number of the bottom supports 5 is four, which are respectively arranged at the four corners of the bottom of the sand receiving box 1. The lower part of the fixing portion 53 is cut into an arc shape as a seat bowl, and the seat bowl is buckled and placed on other tubular supports.

[0042] like Figure 5As shown, in a specific embodiment, the side support 6 is made of elastic material. In this embodiment, the side support 6 is made of a high-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 set at the central axis of the base 61, and a metal wire tube is nested in the fixing hole. A hole is opened on the sand receiving box 1 and the base 61 is fixed to the sand receiving box 1 with screws. A fixing hole is radially set on the rubber head 62, and a metal wire tube is nested in the fixing hole. The rubber head 62 is inserted into other cylindrical supports by sleeve connection, and bolts are used to connect through the fixing hole. The side support 6 is used to assist in fixing the sand receiving box 1 and can form micro-vibration.

[0043] According to the present invention, the support may be an embedded part embedded in the ground.

[0044] The sand receiving box 1 is elastically connected to other supports through the bottom support 5, and the side support 6 can assist in forming an elastic vibrating body; the rock chips falling from the vibrating screen are pressed downstream along the folding plate 3 on the sand discharge trough 21 and the sand guide trough 22 to press the second torsion spring 23, and the excess rock chips are discharged from the sand discharge trough 21, and the limited rock chips enter the sand receiving box 1 through the sand guide trough 22 to form sorted sand. The sand receiving box 4 is plugged into the operating window 11 of the sand receiving box 1, and the rock chips in the sand receiving box 4 can be extracted by pulling. 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 amounts. The sand outlet 12 discharges the excess rock chips to ensure that the rock chips in the sand receiving box 1 are not accumulated. The sand receiving box 1 as a whole can form a vibration docking with the vibrating screen to form a vibrating sand receiving structure.

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

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rock cuttings receiving device for receiving rock cuttings falling from a vibrating screen, characterized in that: include: A sand receiving box (1), wherein the upper end and the front end of the sand receiving box (1) are arranged to be open; A sand receiving box (4), wherein an operating window (11) is provided on the side of the sand receiving box (1), and the sand receiving box (4) is placed in the sand receiving box (1) through the operating window (11); A sorting mechanism (2) is arranged at the upper end of the sand receiving box (1), the sorting mechanism (2) comprising at least one sand discharge groove (21) and at least one sand guide groove (22), the sand discharge groove (21) discharges part of the rock cuttings from the front end opening of the sand receiving box (1), and the sand guide groove (22) guides part of the rock cuttings from the upper end opening of the sand receiving box (1) into the sand receiving box (4).

2. The rock cuttings receiving device according to claim 1, characterized in that: A folding plate (3) is provided at the top edge of the sand receiving box (1), and the folding plate (3) evenly distributes the rock chips dropped from the vibrating screen onto the sand discharge trough (21) and the sand guide trough (22).

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

4. The rock cuttings receiving device according to claim 3, 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).

5. The rock cuttings receiving device according to claim 2, characterized in that: One end of the sand discharge groove (21) and the sand guide groove (22) close to the folding plate (3) is connected to the sand receiving box (1) via a second torsion spring (23), and the sand discharge groove (21) extends beyond the sand receiving box (4).

6. The rock cuttings receiving device according to claim 5, characterized in that: The total width of the sand discharge groove (21) and the sand guide groove (22) is equal to the width of the folding plate (3).

7. The rock cuttings receiving device according to any one of claims 1 to 6, characterized in that: A ramp 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 ramp plate (41) is provided, wherein the sand outlet (42) is located above the ramp plate (41).

8. The rock cuttings receiving device according to claim 7, characterized in that: A sand discharge port (12) is provided at the bottom of the sand receiving box (1), and an overflow groove (43) is provided at the bottom of the sand receiving box (4) on a side away from the ramp (41), so that the slurry discharged through the overflow groove (43) can be discharged from the sand receiving box (1) through the sand discharge port (12).

9. The rock cuttings receiving device according to claim 8, characterized in that: A plurality of bottom supports (5) and a plurality of side supports (6) are respectively arranged at the bottom and the side of the sand receiving box (1); the bottom supports (5) and the side supports (6) are used to connect with other supports to fix the sand receiving box (1) and enable the sand receiving box (1) to vibrate.

10. The rock cuttings receiving device according to claim 9, characterized in that: The bottom support (5) comprises a sleeve (51) arranged at the bottom of the sand receiving box (1), a compression spring (52) and a fixing portion (53) for connecting with other supports, the fixing portion (53) and the sleeve (51) are slidably matched, and the compression spring (52) is located between the fixing portion (53) and the sleeve (51); The side supports (6) are made of elastic material.

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