U.S. patent application number 15/102102 was filed with the patent office on 2017-06-22 for fluid injection tubing with a collar for a test string, having a locking system by abutment against the drilling well head ram.
The applicant listed for this patent is SLIM DRILLING SERVICOS DE PERFURACAO S.A.. Invention is credited to Antonio Sergio Cavalheiro, Mario Cesar Pereira Dos Santos, Leandro Diniz Brandao Rocha, Jose Roberto Scalon Cotello, Ronaldo Soares Eisele, Hamilton Suss Junior.
Application Number | 20170175480 15/102102 |
Document ID | / |
Family ID | 53272653 |
Filed Date | 2017-06-22 |
United States Patent
Application |
20170175480 |
Kind Code |
A1 |
Cavalheiro; Antonio Sergio ;
et al. |
June 22, 2017 |
FLUID INJECTION TUBING WITH A COLLAR FOR A TEST STRING, HAVING A
LOCKING SYSTEM BY ABUTMENT AGAINST THE DRILLING WELL HEAD RAM
Abstract
For the safety of fluid injection tubes with the shaft head. A
fluid injection tube (1) to be used in safety locking test columns,
where a fluid injection tube (1) is used in a test column (E) of a
probing equipment receives a throat (6) incorporated within its
lower edge, right above its nozzle with inner threads (5). After
inserting the test column (E) inside the drilling shaft (P) and
coupling the fluid injection tube (1), as BOP (blow out prevention
system) compartments (G) are closed, the throat (6) is located
right below the lower edge of such closed compartments (G). With
the fluid injection, if the test column (1) is pushed and slided
upwards, the fluid injection tube (1) coupled to the shaft is
locked by its throat (6) under the compartments (G) lower edge With
this stop locking system between the throat (6) and compartments
(G) edge, the test column (E) is prevented from exceeding the
traction force of compartments (G) and being expelled from the
probing equipment platform.
Inventors: |
Cavalheiro; Antonio Sergio;
(Belo Horizonte - MG, BR) ; Pereira Dos Santos; Mario
Cesar; (Belo Horizonte - MG, BR) ; Rocha; Leandro
Diniz Brandao; (Belo Horizonte - MG, BR) ; Suss
Junior; Hamilton; (Belo Horizonte - MG, BR) ; Scalon
Cotello; Jose Roberto; (Belo Horizonte - MG, BR) ;
Soares Eisele; Ronaldo; (Belo Horizonte - MG, BR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SLIM DRILLING SERVICOS DE PERFURACAO S.A. |
Belo Horizonte - MG |
|
BR |
|
|
Family ID: |
53272653 |
Appl. No.: |
15/102102 |
Filed: |
December 5, 2013 |
PCT Filed: |
December 5, 2013 |
PCT NO: |
PCT/BR2013/000544 |
371 Date: |
February 17, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E21B 33/12 20130101;
E21B 49/008 20130101; E21B 17/00 20130101; E21B 34/00 20130101;
E21B 34/066 20130101 |
International
Class: |
E21B 33/12 20060101
E21B033/12; E21B 34/06 20060101 E21B034/06 |
Claims
1) "FLUID INJECTION TUBE WITH THROAT, FOR A TEST COLUMN", comprised
of a fluid injection tube (1) to be used in a test column (E) of a
probing equipment, which has an upper end with a threaded nozzle
(2) followed by a head (3) with a fluid input (4), as such fluid
tube (1) has an internal threaded nozzle (5) in its lower end,
characterized by incorporating a throat (6) externally, right above
the latter (5).
2) "STOP LOCKING SYSTEM IN A DRILLING SHAFT HEAD COMPARTMENT",
according to claim 1, after inserting the test column (E) inside
the shaft (P), exceeding the shaft head (CA) to be screwed between
its threaded box (C) and threaded nozzle (2) of the fluid tube (1),
the BOP (blow out uncontrolled flow prevention system) compartment
(G) closing is carried out, facing the said fluid injection tube
(1) body, which is, in such condition, characterized by positioning
its throat (6) right below the closed compartments (G) lower
ends.
3) "STOP LOCKING SYSTEM IN A DRILLING SHAFT HEAD COMPARTMENT",
according to claims 1 and 2, after starting the fluid injection,
passing the oversleeve (M) through the fluid injection tube (1) and
test column (E) until it reaches the shaft bottom (P). If the
pressure applied there pushes the test column (E) upwards, that
item is delimited in its throat (6) movement while carrying the
coupled fluid tube (1), it is characterized by locking the stop
under the compartment lower end (G), preventing the said test
column (E) to exceed the traction forces between that column and
BOP compartments (G), without getting expelled.
Description
[0001] The descriptive report hereof refers to a patent of
invention request to an adaptation made in a tube, in which a fluid
is injected through a drilling shaft test column. This new fluid
tube receives a throat and, after being threaded to the threaded
box of the upper rod partially exposed in the shaft head, a stopper
is formed against the BOP (uncontrolled flow prevention system)
closed compartment.
[0002] After injecting the fluid, the phase step (where absorption
and rock break skill are defined), the pressure applied within the
shaft during the test results in an top-bottom force, so then the
test column is prevented from expelling by the tube throat locking
against the BOP closed compartment lower edge.
TECHNIQUE STATUS
[0003] As it is known while shaft drilling in probe system,
inasmuch as advancing some layers hit by the chaplet drill shall be
tested in a phase called "Absorption Test". By fluid actions inside
the shaft bottom a history shall be defined, which contains soil
characteristics for a further analysis by the responsible staff to
proceed with drilling operations in compliance to safety
standards.
[0004] For instance, the patent document PI 8108500-1 so-called
"INNER TUBE ELEMENT FOR A PROBING TEST DEVICE AND MANUFACTURING
PROCESS OF A LOWER TUBE ELEMENT" may be mentioned, which was
requested in Dec. 29, 1981.
[0005] To proceed with the test, a tubular column referred as test
column is inserted to a drilling shaft, having its upper rod
partially exposed in the shaft head with its threaded box placed to
screw the threaded nozzle of a fluid injection tube. In the
platform, the fluid injection tube in turn gets attached to a pump
oversleeve coupling connected to a fluid reservoir, then the
referred fluid injection tube is surrounded by the BOP (inflow
prevention system and connection between the coating and shaft
head), compartment closing, forming a seal over the said shaft
head.
[0006] After closing BOP compartments surrounding the fluid
injection tube, the pump is actuated for such injection, passing
test column and going to the shaft bottom, pressurizing it. In this
condition, all shaft interior part, as well as the shaft head and
BOP, closed by the compartments, undergoes great pressures that are
applied from the bottom, which reflects against the test column
bottom, forcing it continuously upwards.
[0007] Such condition, along with the test column flat wall, help
the latter to exceed the locking traction force, formed by closed
compartments over the column. When it is pushed upwards, the said
test column slides through the surrounding fluid tube passage, as
it may move itself regarding its estimated original position in the
platform, then risking the test execution and bringing threats to
the operation and staff on the operation platform.
PURPOSE OF PATENT
[0008] The fluid injection tube here, due to its body adaptation,
presents a new locking system that prevents the test column to
escape through BOP (Blow out prevention system) compartments under
great pressure.
[0009] In an overview explanation regarding the fluid injection and
its surrounding system, as this patent request purpose, they shall
be better detailed in the attached drawings, which describe:
[0010] Picture 1--perspective view of the fluid injection tube,
showing its upper threaded nozzle to screw the crane
connector/lifting system, as well as the fluid input to the pump
oversleeve coupling connected to the fluid reservoir. On the lower
end of said fluid injection tube, prior to its threaded nozzle
(screwed to the threaded box of the test column rod), there is an
external throat included, developed for a stop system locking
against BOP compartments. In such view, section A-A is
indicated;
[0011] Picture 2--section A-A;
[0012] Picture 3--expanded details A, in a perspective, showing
upper and lower-end nozzle of the fluid injection tube;
[0013] The following pictures from 4 to 11, in schematic views,
refer to the installation of the fluid injection tube and its
locking system created for the test column. Both the fluid
injection tube and test column rods and drilled shaft have been
drawn with its expansion cut and reduced for a better system
comprehension:
[0014] Picture 4--the shaft drilled by the gas/oil probing system
drill column is shown, and along with its head surrounded by the
compartments, the test column is being inserted in the test phase
to create a history about soil characteristics;
[0015] Picture 5--view of the previous picture, which shows the
test column being inserted in the shaft;
[0016] Picture 6--view of the previous picture, which shows the
test column already inserted; The fluid injection tube lower nozzle
is screwed by the partially exposed upper threaded box on the shaft
head, incorporating the external throat right above. The fluid
input is located along with the upper threaded nozzle;
[0017] Picture 7--view of the previous picture, showing the closed
compartments, incorporating the shaft head and sealing them over
the fluid injection tube body. Together with detail B, showing the
external throat in an extended manner, incorporated to its lower
end, located right below the compartments edge;
[0018] Picture 8--view of the previous picture, showing the fluid
(due to pump action not shown) is injected, through the oversleeve,
fluid input and injection tube cylindrical body, which penetrates
in the test column and, eventually in the shaft bottom under
pressure;
[0019] Picture 9--view of the previous picture, which shows the
fluid reaching the shaft head;
[0020] Picture 10--view of the previous picture, showing the fluid
applying a force from the shaft bottom and pressing the test column
coupled to the fluid tube, upwards to the compartment. Together
with detail C, showing the pressure and force applied by the fluid
through arrows in an extended manner.
[0021] Picture 11--view of the previous picture, showing the fluid
injection tube pushed upwards with the test column, when the throat
is delimited under the lower edge of the compartments, forming a
stop locking system along with the latter. In this condition, the
test column interrupts its lifting course and it avoids the escape
from the compartments and it is expelled from the drilled shaft.
This system is shown in detail D in an extended manner.
[0022] According to the attached drawings, the FLUID INJECTION TUBE
WITH THROAT FOR A TEST COLUMN WITH A STOP LOCKING SYSTEM IN
DRILLING SHAFT HEAD COMPARTMENT", object of this request of patent,
is comprised of a fluid injection tube (1) to be used in a test
column (E) of the probing equipment, which has an upper end with a
threaded nozzle (2) and a head (3) with a fluid input (4). In its
lower end, the fluid tube (1) has an internal threaded nozzle (5)
and, an external throat (6) is incorporated right above, as shown
in pictures 1, 2 and 3.
[0023] As the incorporated throat (4) is considered an innovation,
the fluid injection tube (1), then providing a new stop locking
system to the test column (E) used in the test phase, to create the
history for soil characteristics (S) in drilled shafts (P) in
gas/oil operations.
[0024] As shown in pictures 4 and 5, the test column (E) is guided
and inserted through the probing equipment lifting system (not
shown) inside the shaft (P), surpassing its head (CA), where BOP
(Blow Out prevention system) compartments (G) are installed. The
test column (E) partially looses its partially exposed upper rod
with a threaded box (C). Afterwards, in its lower end threaded
nozzle (5), the fluid injection tube (1) is screwed to the threaded
box (C) of the upper rod, coupled to the test column (E), as shown
in pictures 6 and 7.
[0025] Then the of compartments (G) surrounding the shaft head (P)
are closed and faced by their edges on the fluid injection tube
body (1), creating a sealing against uncontrolled gas flows. As
such, the fluid injection tube (1) throat (6), as especially shown
in detail B of picture 7, it is located right below the closed
compartments (G) edge.
[0026] After receiving it from the fluid input (4), the oversleeve
connection (M) of the pump connected to the fluid reservoir (not
shown), the test injection is started, as shown in pictures 8 and
9, when the fluid goes through the fluid injection tube (1) and
also through the test column (E) until it reaches the shaft bottom
(P). In case of great pressures applied by the fluid from the shaft
bottom (P), the test column (E) tends to be pushed upwards and it
surpasses its traction forces through its smooth walls within
itself and the closed BOP compartment, then it slides itself, as it
forces its escape through such compartments (C), as shown in
picture 10 and its extended detail C.
[0027] In this condition, the test column (E) carries the coupled
fluid injection tube (1) while lifting, which is locked up under
the compartment (G) lower edge with its throat (6), according to
the request of patent hereof. As shown in detail D of picture 11,
the stop locking system between the throat (6) and compartment (G)
lower edges prevents the test column (E) from breaking through the
compartment (G) sealing and expelling itself
[0028] As the test column (E) is duly locked, the test may be
accurately carried out through a sensor system installed in the
probe, without impairing the history of soil characteristics
regarding the drilled shaft (P)
* * * * *