WO2015081393A1

WO2015081393A1 - Support with limiting collar for casing string, for locking by abutment above the mandrel of the drilling equipment

Info

Publication number: WO2015081393A1
Application number: PCT/BR2013/000545
Authority: WO
Inventors: Antonio Sérgio CAVALHEIRO; Mário Cesar PEREIRA DOS SANTOS; Leandro DINIZ BRANDÃO ROCHA; SUSS Júnior HAMILTON; José Roberto SCALON COTELLO; Ronaldo SOARES EISELE
Original assignee: Slim Drilling Serviços De Perfuração S.A
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2015-06-11
Also published as: US20170089151A1; BR112015021111A2

Abstract

A support with a limiting collar for a casing string, for locking by abutment above the mandrel of the drilling equipment, is formed by a support (1) used between the winch of the drilling equipment and the casing tubing column (for cementing gas/oil wells). Above the threaded outlet (5), the support (1) has a collar (6) having a greater diameter than the opening radius of the mandrel (M) of the drilling equipment. When the cylindrical support of the mandrel (M) is opened to allow introducing or withdrawing the casing column (R) into or from the drilling well (PO), the casing column is prevented from accidentally dropping into the drilling well (PO) by the system that locks the collar (6) by abutment of the collar against the open cylindrical support of the mandrel (M), in the event of the cable (CA) of the winch of the drill snapping, for example. This avoids costly and lengthy procedures to retrieve the casing column (R) from the bottom of gas/oil drilling wells (PO).

Description

"DELIMITATING NECKLACE SUPPORT FOR COATING COLUMN, FOR LOCKING ABOVE THE DAMPING EQUIPMENT BODY" This descriptive report refers to a patent application for a collar fitted to the lifting bracket (up / down). descent) of the casing column, which was developed to enable a system that prevents the fall of casing tubes mounted inside the drillhole at the time of introduction and removal, if necessary with the aid of the equipment lifting system oil / gas drilling.

Under the proposed system, in the event of a rupture of the probe main winch cable, if the assembled casing assembly begins to free fall well into the lifting bracket collar, its sizing will form a locking stop over the open arms of the riser. drilling rig, avoiding inadvertent descent and thus avoiding additional rescue (fishing) procedures for said tooling in this step of coating and cementing.

TECHNICAL STATE

As is well known, in gas / oil extraction drilling systems a series of column-mounted drill rods are used which, in turn, together with their drill bit or drill bit, gradually drill into the ground. By way of example, reference may be made to patent document PI 0010106-0 entitled "PUNCHING ROD HANDLING DEVICE", filed on April 18, 2000, which facilitates the direction and alignment of the rods near the drilling column.

In any case, along the hole the well wall should be lined and cemented with sections in sections, keeping it clear of obstacles so that the drill can advance safely. For this purpose, a column called a casing column is used in this coating and cementation step (composed of threaded tubes between their ends with boxes and threaded pins, threaded in male and female system).

The rods that make up the casing column are assembled from an eyelet bracket, which receives the hook of a cable connected to the probe lifting system, next to the drill rig. Through its threaded nozzle the bracket is threaded to the threaded pin of a first tube, which is driven by the probe winch - up to the mandrel already installed on the platform, aligned with the wellhead. After this tube is locked by the mandrel arms and with its tubular body already partially inserted into the well, the holder is unscrewed. On the platform said bracket is threaded into the threaded pin of a subsequent tube, which is driven and has its threaded housing threaded to the threaded pin of the first tube already attached to the mandrel. After threading (between housing and threaded pin) from one tube to another, the arms The opening of the mandrel opens so that the now "free" formed column is lowered into the well by the probe winch for cementing the annular space between the casing and the wall of the well, a procedure repeated successively, as programmed, as where the well goes deeper.

At this point, the entire weight of the column is supported from the eye of the bracket, by the cable of the probe column lowering and raising system. '

In this condition the heavy weight imposed by the column can cause the cable to break or the eye itself, in case of material failure, causing the column to fall from the casing tubes already mounted and lowered into the well, which exceed the open arms of the falling mandrel. well in. This occurrence, obviously undesirable, causes downtime in this coating stage requiring that the set be rescued through the use of specific "fishing" equipment in a gas / oil well, thus causing losses and delays in the drilling work.

PATENT OBJECTIVE

The support in question undergoes an adaptation, as a result of this patent application, whereby a locking system will be caused against the cylindrical support of the mandrel if the handle or the eye (of said support) is broken at the moment when it is assembled. pipe is suspended, positioned by the probe winch, to be lowered gradually well into it.

Superficially explained, the support with its new constructivity and the system that surrounds it becomes more detailed through the accompanying drawings.

Figure 1, taken from PI 0010106-0, represents the state of the art cited above showing a device for assisting a drilling rig in drilling. Such an assembly is formed by a swivel head assembly by swingarm, locking and restricted opening cylindrical support which comprises an elongate support in addition to rod fasteners. Through the assembly, the drill rods are transported from a feed frame to an initial operating position and aligned with the drill string, threadedly engaged and introduced for drilling.

The figures below, 2 to 15, refer to the patent application in question: .. .... . .

Figure 2 - Perspective views of the bracket from its threaded nozzle for tapping to the threaded pin of the casing rod and, alongside, a view from the receiver hook eye of the cable hook connected to the probe winch. In this view the cut A-A is indicated;

Figure 3 - section A-A of the support;

Figures 4 and 5 - section AA showing the bracket before and after threaded through its threaded nozzle to the threaded pin of the coating;

Figure 6 - perspective view showing the threaded support to the casing pipe column;

Figure 7 - perspective view showing the bracket coupled by its eye, by the hook attached to the probe winch cable;

Figure 8 - section A-A, showing the tube coupled with the support, being directed to the mandrel at the wellhead;

Figure 9 - section A-A showing the tube positioned by the probe winch, locked by the cylindrical support of the mandrel and exposing its threaded pin;

Figure 10 - Section A-A showing a subsequent tube aligned with its threaded housing threaded into the threaded pin in the casing tube already locked in the cylindrical support of the mandrel;

Figure 1 1 - Section A-A showing the subsequent tube already threaded by its threaded housing into the threaded pin of the first tube. As is well known, after the threading of -other-pipes, the casing column is formed as the well is deepened;

Figure 12 - Section A-A showing the mandrel with its cylindrical support locking the casing pipe column. Beside, detail A;

Figure 13 - section AA showing the open cylindrical support for the insertion of the casing column which, under this condition, remains suspended by the probe winch; Figure 14 - section AA showing that the cable attached to the probe winch has broken and, with the cylindrical support of the mandrel open, the column will overtake them and inadvertently fall into the well;

Figure 15 - Section A-A, showing that when facing the support collar, the cylindrical mandrel support locks the entire casing column in a stop system preventing said assembled casing tube assembly from falling into the well.

In accordance with the accompanying drawings, the "FINISHING COLLAR COLLAR SUPPORT NECKLACE BRACKET FOR LOCKING ABOVE THE SCREWING EQUIPMENT", which is the reason for this patent application, is a support (1 ) provided with an eyelet (2) in its upper portion (3), from which extends the tubular body (4) which, prior to the threaded nozzle (5) incorporates a shoulder-stepped collar (6), as shown in figures 2 and 3.

.. Thus constituted, the support (1) will provide an unprecedented safety system when assembling, lifting / lowering the casing tube assembly (T) with its pins (P) and threaded boxes (C), which make up the casing column. (R) Such column (R) is used for the annular space cementation step between the casing and the drilling well wall (PO) in gas / oil drilling equipment.

As shown in Figure 4, by its threaded nozzle (5) said bracket (1) is aligned and then, as shown in figure 5, threaded to the threaded pin (P) of a first pipe (T), as shown in figure 6. Then, as shown in figure 7, by the eyelet ( 2) the support (1) receives the introduction of the hook (G) connected to the probe winch cable (CA) (not shown), through which said tube (T) is directed, as shown in figure 8, in the platform and secured by the cylindrical support of the drill rig (M) near the well (PO). The cylindrical mandrel support (M) closes by wrapping and locking the first tube (T) with the tubular body partially inserted into the well (PO), aligned to expose its threaded pin (P), as shown in Figure 9.

The holder (1) is then withdrawn and threaded to a subsequent tube (T1), whose threaded housing (C) is aligned with the threaded pin (P) of the first tube (T), as shown in Figure 10, for threading between them. In this condition, the tubes assembled and forming the casing column (R) are locked by the cylindrical support of the mandrel (M), as shown in the detail in figure-1-2.

The moment the assembled tube assembly is inserted into the well (PO), the cylindrical mandrel support (M) opens and said casing column remains suspended by the probe winch cable (CA) whose hook (G) is secured to the eye (2) of the bracket (1) as shown in figure 13. In this condition, due to the weight of the casing column (R), for example the cable (AC) of the burst probe winch, as shown in figure 14 and the tube set abruptly start its unwanted (free) descent through the well (PO), such descent stroke is immediately interrupted at the moment the collar (6), having a diameter larger than the opening radius of the cylindrical mandrel support (M), above them, in a stop system, as shown in Figure 15 and its enlarged detail B.

In this way, the casing column (R) remains without dropping well (PO) into, supported by the cylindrical support of the mandrel (M), which can be closed again for making arrangements.

The following is a sequence of the operational procedure for descending production liner. The technical specifications given in English are used throughout the national territory and are thus maintained in this patent application.

1. QHSE

1. 1 Complete PPE to work in the area;

1.2 Undertake work risk analysis when necessary;

1.3 Perform work permit opening (PT) when necessary;

1.4 Wear seat belts when working at heights;

1 .5 When observing unsafe acts or conditions, interrupting work;

1.6 Isolate area when moving loads, performing hot work, pressure testing etc; 1.7 When in doubt about performing the task, call a safety technician or consult supervision;

Initial check

2. 1 Ensure that the wear bushing is recovered at the end of drilling after removal from the well column ("SDS-PROC-PI-002 - Wear Bushing Installation and Uninstallation"). Remember that the blind drawer must be closed between operations to maintain well safety;

2.2 Ensure that the 4 ½ "tube drawer is replaced by the 3 ½" tube drawer and after this replacement perform a complete or partial BOP test depending on the date of the last test following the "SDS-PROC-Ρΐ-" procedure. 001 - BOP Test ";

2.3 Have tally hands, prepared by the Operator's Company Man, to ensure that the casing is properly molded prior to its descent into the well;

2.4Preparing the platform with all equipment and procedures necessary to lower the liner; Tools needed for descent

3. 1 Hydraulic wrench.

3.2 Wrench.

3.3 Torque Wrench.

3.4 Sledgehammer. Special coating grease.

Steel brush and lime.

Circulation Head 3 ½ "DE - 2 7/8" Thread NW CX x 3 ½ "FJL VAM Pin x 5000 psi and Circulation Head 3 ½" DE - 2 Thread 7/8 "NW Pin x 3 ½" FJL VAM Housing x 5000 psi. 3.8 4 ½ "DE Rotating Head - 2 7/8" NW x 5000 psi Thread and 3 ½ "DE Rotating Head - 7 7/8" NW x 5000 psi Thread.

3 ½ "VAM TOP Jacking Sub - 3 ½" Thread FJL VAM Housing and 3 ½ "VAM TOP Jacking Sub - 3 ½" FJL Thread Pin x 5000 psi.

Let Down Tube 3 ½ "DE - Thread 3 ½" HRQ Pin x 3 ½ "HRQ Housing x 5000 psi, Crossing Sub 4 ½" DE - Thread 3 ½ "HRQ Pin x 3 ½" EUE Housing x 5000 psi, Sub 4 ½ "DE Cross - 3 ½" EUE Thread Pin x 3 ½ "HRQ Housing x 5000 psi.

0 Wire rope lift.

1 distortion for 30 tons.

2 One Jacket Gasket VAM FJL 3 "Pin x VAM FJL 3" Pin.

3 Hand wedge set with jaws for 3 ½ ".4 Araldite for floating shoe and collar (if required). 3. 15 3 ½ "Coating Centralizers (for 4 7/8" wells).

3.16 2,797 "Drift Coating Template.

3. 17 7 1/16 "Diameter Liner Hanger.

Coating Down Procedure

4. 1 Move all accessories and tooling to the rig floor, such as the circulation heads,

casing, chain switches, torque wrench, lubricants, greases etc;

5. 1 Open blind drawer for lowering the liner;

5.2 3 ½ "coatings with 9.2 lb / ft (13.69 kg / m) should be placed longitudinally to the length of the probe and positioned on the easel next to the tube ramp to be lifted with the aid of probe winch and pipe handler. VAM FJL female threaded ends should face the platform. Have the VAM FJL male threaded Sub Lift. This should have a maximum OD of 3 ½ ";

5.3 Install the hand wedge assembly below the open foot clamp;

5.4 Removing the upper part of the rotating head;

5.5 Replace 3 ½ "jaw assembly on Genesis Probe hydraulic chuck and foot clamp. Install 3 3 ½ "guide bushings: at the top and bottom of the drill head and top of the foot clamp. Remove the shackles and lower the" leather cover "on the front and bottom of the probe mast to allow a view of the coupling. the threads;

With the help of two 24 "griffon wrenches or chain wrench, pre-screw the Lifting Subs described in items 3.9, available on the coatings, as shown. Screw the Lifting Subs as far as possible;

first stage from 0 to 1500m (40klb 18ton winch capacity)

The liner will begin lowering with the mandrel in its open position;

With the aid of the hydraulic gantry next to the rod ramp, lift first casing joint with the Elevation Sub attached.

Like . aid of the probe winch already prepared with the elevator and cable twist (30 tons), lift the 1st 3 ½ "tube and position it in the mouse hole;

Using the hydraulic wrench, apply torque to the connection between Lifting Subs and liner.

Still with the winch, raise the joint and position it in the well, with its connection (female) above the foot clamp; 6.6 Close foot clamp, open lift and using hydraulic wrench, break torque of connection with Lifting Sub;

6.7 With the aid of the hydraulic gantry next to the boom ramp, lift next 3 ½ "casing tube with Elevation Sub attached;

6.8 With the aid of the probe winch already prepared with the cable elevator and distortioner (30 tons), lift 3 ½ "tube and position it in the mouse hole;

6.8 With the aid of the hydraulic wrench, torque the connection between Lifting Sub and casing;

6.9 Lifting the mouse hole casing above the closed foot clamp, supporting the weight of the casing joint already lowered, leaving room for coupling of the hydraulic switch;

6. 10 Move hydraulic wrench between positioning joints;

Still with the aid of the probe winch, gently lower the liner inside the hydraulic wrench, position the male thread FJL of the tube into the female thread, starting the first tightening manually, or with the help of the wrench.

Claims

1) "FINISHING COLUMN COLLAR SUPPORT", consisting of a support (1) used for mounting, lowering and raising the casing tubes (T) of the casing column (R) attached or released by the cylindrical bracket of the mandrel (M) on the rig of the gas / oil drilling rig next to the drilling well (PO), said bracket (1) provided with eye (2) at its upper portion (3), from which it extends the tubular body (4) which, underneath, has internally threaded nozzle (5), characterized in that said support (1) incorporates, anteriorly to the threaded nozzle (5), a cam-stepped collar (6) (7).

2) "FINISHING COLLAR COLLAR SUPPORT" according to claim 1, characterized in that the collar (6) of the support (1) is dimensioned larger than the opening radius of the cylindrical support of the mandrel (M) of the equipment probing

3) "STOP LOCKING ABOVE THE PROBE EQUIPMENT BUCK" according to claims 1 and 2 after mounting the casing pipe column (T), with the support (1) coupled by the hook (G) of the probe winch cable (CA) and the casing column (R) secured by the cylindrical support of the mandrel (M) at the moment of opening of the latter and said casing column (R) being suspended for be introduced or removed from the well (PO), in the event of breakage, undue descent, characterized by locking the collar (6) on the cylindrical mandrel support (M) in a stop system, is prevented.