WO2015015159A2 - Apparatus, system and method for cleaning a borehole - Google Patents

Apparatus, system and method for cleaning a borehole Download PDF

Info

Publication number
WO2015015159A2
WO2015015159A2 PCT/GB2014/052139 GB2014052139W WO2015015159A2 WO 2015015159 A2 WO2015015159 A2 WO 2015015159A2 GB 2014052139 W GB2014052139 W GB 2014052139W WO 2015015159 A2 WO2015015159 A2 WO 2015015159A2
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
nozzle
borehole
throughbore
outer barrel
Prior art date
Application number
PCT/GB2014/052139
Other languages
French (fr)
Other versions
WO2015015159A3 (en
Inventor
Philippe Cravatte
Pascal Bartette
Original Assignee
Corpro Systems Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Corpro Systems Limited filed Critical Corpro Systems Limited
Publication of WO2015015159A2 publication Critical patent/WO2015015159A2/en
Publication of WO2015015159A3 publication Critical patent/WO2015015159A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/605—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a core-bit
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0078—Nozzles used in boreholes

Definitions

  • the present invention relates to an apparatus, system and method for cleaning a borehole.
  • Various coring apparatus used to obtain a core sample from a borehole are known. Cutting and collecting a core sample may be referred to as geological logging. Other types of well logging or borehole logging are commonly used to analyse the rock or sediment of the borehole, including measurements made by lowering instruments into the borehole. This may be referred to as geophysical logging.
  • Geophysical logging may include measuring the electrical resistivity, porosity, density, and/or radioactivity of the rock or sediment of the borehole. There are other measurements that can be taken and these are well known to the person skilled in the art of bore or well logging.
  • a cleaning apparatus for cleaning a borehole comprising:
  • a second cylinder locatable at least partially inside the first cylinder, the second cylinder having a first and a second end and a throughbore therebetween;
  • the cleaning apparatus for cleaning a borehole in accordance with the first aspect of the present invention is typically suitable for cleaning a wall of the borehole.
  • the wall of the borehole typically comprises the rock and/or other subterranean formation through which the borehole has been drilled or formed. Borehole drilling and logging operations have historically been separate stages of producing a borehole, drilling being suspended before borehole logging is started. This means that borehole logging is expensive.
  • the inventor of the present invention has realised that accurate logging and in particular geophysical logging of the borehole depends on the condition of the wall of the borehole. Contamination in or on the wall of the borehole may affect and/or distort the data obtained. Removing the contamination can improve the quality of the geophysical data obtained.
  • the contamination may comprise one or more of drilling fluid, drilling mud, and filter cake.
  • the first cylinder may be locatable at least partially inside an outer barrel.
  • One end of the outer barrel may comprise a core bit.
  • the core bit may be referred to as a centerless drill bit.
  • the outer barrel may be locatable in the borehole and may have an outer diameter that is similar to the inner diameter of the borehole.
  • the outer diameter of the outer barrel is typically considered similar to the inner diameter of the borehole if the outer diameter of the outer barrel is from 80 to 100%, typically from 90 to 100% and may be from 95 to 100% of the inner diameter of the borehole.
  • the outer barrel has an outer diameter that is similar to the inner diameter of the borehole, because this helps to secure and/or stabilise the outer barrel, first cylinder locatable at least partially inside the outer barrel and the second cylinder locatable at least partially inside the first cylinder, relative to the borehole.
  • the cleaning apparatus for cleaning a borehole according to first aspect of the present invention typically performs best if, in use, the distance between the at least one nozzle and the borehole wall is constant. In use, the distance between the at least one nozzle and the borehole and/or borehole wall may be from 100 to 1 mm, optionally from 70 to 10mm and typically from 30 to 10mm.
  • the second cylinder is typically rotatable relative to and may be rotatable inside the first cylinder. There may be one or more bearings between an outer surface of the second cylinder and an inner surface of the first cylinder.
  • One or more of and preferably all of the first cylinder, second cylinder and outer barrel may have a circular cross-section.
  • the at least one nozzle may be moveable relative to the second cylinder.
  • the at least one nozzle may be pivotally attached to the first end of the second cylinder.
  • the at least one nozzle may be pivotable in and out of the longitudinal axis of the second cylinder.
  • the cleaning apparatus typically comprises two nozzles and may be more.
  • the two nozzles are typically pivotally attached to opposing sides of the first end of the second cylinder.
  • the first end of the second cylinder may further include a chamber in fluid
  • the chamber is typically cylindrical.
  • the chamber may have an inner diameter greater than the inner diameter of the throughbore of the second cylinder.
  • the chamber typically houses a piston, the piston being moveable inside the chamber.
  • An outer surface of the piston is typically contactable against an inner surface of the chamber. There may be one or more seals between the outer surface of the piston and the inner surface of the chamber such that a fluid-tight seal is formable.
  • the chamber may comprise a channel, the channel being in fluid communication with the throughbore of the second cylinder and the at least one nozzle.
  • the piston typically surrounds the channel, that is the channel passes through the centre of the piston.
  • the piston maybe moveable relative to the channel.
  • the piston may be moveable relative to the channel and chamber.
  • the channel may be attached to the chamber.
  • An inner surface of the piston is typically contactable against an outer surface of the channel. There may be one or more seals between the inner surface of the piston and the outer surface of the channel such that a fluid-tight seal is formable.
  • the at least one nozzle typically comprises a body and an arm. One end of the arm is normally attached to the body.
  • the arm is typically rotatable relative to the body.
  • the at least one nozzle may comprise an inlet in fluid communication with the channel in the chamber and/or the throughbore of the second cylinder and an outlet through which fluid can be discharged.
  • the outlet may be at an opposing end of the arm.
  • the outlet may be moveable, typically rotatable relative to the longitudinal axis of the at least one nozzle.
  • the cleaning apparatus may further include at least one actuator contactable with the piston and a contact surface of the at least one nozzle.
  • the actuator is typically extendable through a wall of the chamber.
  • the at least one actuator is typically a rod. In use the rod moves with the piston and moves relative to the wall of the chamber.
  • the actuator extends out from the chamber and presses against the contact surface on the at least one nozzle, pushing the at least one nozzle from a first retracted position into a second open position.
  • the arm of the at least one nozzle In the first retracted position the arm of the at least one nozzle is substantially aligned with the longitudinal axis of the first and/or second cylinder.
  • the arm of the at least one nozzle is typically offset from the longitudinal axis of the first and/or second cylinder.
  • the outlet is closer to the wall of the borehole compared to when the arm is in the first retracted position.
  • the fluid dischargeable through the outlet of the at least one nozzle may comprise one or more of water, brine and a detergent.
  • the second cylinder may rotate relative to and inside the first cylinder and so the at least one nozzle may rotate relative to the borehole.
  • the fluid dischargeable through the outlet of the at least one nozzle may contact the borehole wall such that the at least one nozzle is pushed away from the point of contact between the fluid and the borehole wall and the at least one nozzle and so also the second cylinder may rotate relative to the first cylinder.
  • the cleaning apparatus for cleaning a borehole according to the first aspect of the present invention may also or alternatively be an apparatus for increasing the inner diameter of the borehole.
  • the fluid dischargeable through the outlet of the at least one nozzle may be used to increase the inner diameter of the borehole.
  • Increasing the inner diameter of the borehole may be referred to as enlarging the borehole.
  • Using the fluid dischargeable through the outlet of the at least one nozzle to increase the inner diameter of the borehole may be particularly useful when the borehole has been formed through brittle or at least relatively brittle formations comprising coal and/or loose sands. In use, fragments of the brittle or at least relatively brittle formations are typically removed and/or washed away from the borehole wall.
  • the fluid dischargeable through the outlet of the at least one nozzle may be discharged at a velocity of from 10 to 80m/s, preferably from 20 to 40m/s.
  • the fluid dischargeable through the outlet of the at least one nozzle may be discharged at a flow rate of from 20 to 120GPM (from 0.00126 to 0.00757m 3 -s "1 ), preferably from 80 to 100GPM (from 0.00505 to 0.00631 m 3 -s "1 ).
  • the inner diameter of the borehole may be increased by from 1 to 20%, optionally by from 1 to 10% and normally by from 1 to 5%.
  • the borehole may be used to extract one or more of crude oil, natural gas, water, minerals and geothermal heat.
  • the cleaning apparatus for cleaning a borehole in accordance with the first aspect of the present invention may be particularity suitable for use with a drill string.
  • a system for producing a borehole comprising:
  • an outer barrel defining a throughbore, one end of the outer barrel comprising a core bit
  • a cleaning apparatus as described herein, locatable in the throughbore of the outer barrel.
  • the system may also comprise a plug locatable in the throughbore of the outer barrel, one end of the plug comprising a drill bit; and alternatively or additionally the system may comprise an inner barrel locatable in the throughbore of the outer barrel, the inner barrel adapted to receive a core sample.
  • the plug and/or inner barrel and the cleaning apparatus locatable in the throughbore of the outer barrel may be interchangeable to permit drilling, coring and cleaning of them borehole respectively.
  • the outer barrel is run and/or lowered into the borehole and then one of the plug, inner barrel and cleaning apparatus are run or lowered into the borehole and into the throughbore of the outer barrel. It is an advantage of the present invention that the outer barrel remains in the borehole and only one of the plug, inner barrel and cleaning apparatus have to be tripped and/or raised out of the borehole before another one of the plug, inner barrel and cleaning apparatus is run and/or lowered into the borehole. Tripping and/or raising one of the plug, inner barrel and cleaning apparatus out of the borehole may be referred to as fishing and may use wireline. This saves the time and cost of tripping and running the outer barrel out of and then back into the borehole so that the borehole can be cleaned for borehole logging.
  • the cleaning apparatus may be securable in the throughbore of the outer barrel.
  • both the outer barrel and the cleaning apparatus may be tripped and/or raised out of the borehole together. This has the advantage that tripping and/or raising the outer barrel and the cleaning apparatus requires no additional trip compared to tripping and/or raising only the outer barrel.
  • the at least one nozzle of the cleaning apparatus typically comprises a body and an arm. One end of the arm is normally attached to the body.
  • the arm is typically rotatable relative to the body. In a first retracted position the arm of the at least one nozzle is substantially aligned with the longitudinal axis of the first and/or second cylinder. In a second open position the arm of the at least one nozzle is typically offset from the longitudinal axis of the first and/or second cylinder.
  • the cleaning apparatus can be deployed with the arm of the at least one nozzle in the first retracted position before, in use, the arm of the at least one nozzle moves to the second open position. This reduces the outer diameter of the cleaning apparatus for deployment but does not limit the effectiveness of the at least one nozzle of the cleaning apparatus to remove contamination in or on the wall of the borehole because, in use, the at least one nozzle is deployable close to the borehole wall.
  • the arm of the at least one nozzle typically remains in the second open position until the cleaning apparatus is retrieved to surface through the throughbore.
  • outer barrel in a borehole, the outer barrel defining a throughbore, one end of the outer barrel comprising a core bit;
  • the ejecting step normally occurs when the outer barrel is being moved in a pre- existing borehole. For example, after forming a borehole the outer barrel is retracted from the borehole, and the ejecting step happens as the outer barrel is being removed.
  • the ejecting step does not happen at the same time as forming a borehole using the core bit.
  • the method of cleaning the borehole may be part of a method of producing a borehole.
  • the invention provides a method of producing a borehole, the method comprising the steps:
  • the ejecting step normally occurs when the outer barrel is being moved in the borehole formed earlier in the method according to the fourth aspect of the invention. For example, after drilling to form the portion of the borehole, the outer barrel is retracted from the borehole, and the ejecting step happens as the outer barrel is being removed.
  • the cleaning apparatus for cleaning a borehole according to the fourth aspect of the present invention may also or alternatively be an apparatus for increasing the inner diameter of the borehole.
  • the method may include the steps of inserting the apparatus into the throughbore of the outer barrel and ejecting a fluid from the at least one nozzle of the apparatus, the fluid contacting a wall of the borehole.
  • the method may then include the step of increasing the inner diameter of the borehole by removing and/or washing away fragments of the formation through which the borehole is formed using the fluid ejected from the at least one nozzle of the apparatus.
  • the method of the third or fourth aspect may further include the step of drilling at least a portion of the borehole with the outer barrel and collecting a core sample in a core barrel locatable in the throughbore. Normally this happens at a different time to the ejecting step.
  • the step of removing the plug from the outer barrel may include running or lowering a hook into the borehole and attaching the hook to the plug before tripping or raising the plug out of the outer barrel and borehole.
  • the step of inserting a cleaning apparatus into the outer barrel may include running or lowering the cleaning apparatus into the borehole.
  • the method of the third or fourth aspects may further include the step of removing the cleaning apparatus and outer barrel from the borehole whilst the cleaning apparatus is located in the outer barrel.
  • first and second aspects of the present invention can be incorporated into the third or fourth aspects of the present invention and vice versa.
  • Figure 1 is a cross-sectional perspective view of the apparatus according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional perspective view of the nozzles of the apparatus
  • Figure 3 is a perspective view of the nozzles in the first retracted position
  • Figure 4 is a perspective view of the nozzles in the second open position.
  • Figure 5 is a cross-sectional view of the nozzles and actuators of the apparatus.
  • Figure 1 shows an apparatus 10 for cleaning a borehole.
  • the apparatus 10 includes a first cylinder 12 and a second cylinder 14 located partially inside the first cylinder 12.
  • the second cylinder 14 has a first 16 and a second 18 end and a throughbore 20 therebetween.
  • Two nozzles 30a and 30b are attached to the first end 16 of the second cylinder 14.
  • the two nozzles 30a and 30b are in fluid communication with the throughbore 20.
  • Each nozzle 30a and 30b has an arm 32a and 32b respectively, the arms are attached to a body 34.
  • Each nozzle 30a and 30b also has an outlet 36a and 36b respectively, through which in use, fluid (not shown) is discharged.
  • the borehole and borehole wall are not shown. In use, the distance between the outlets 36a and 36b of the two nozzles 30a and 30b respectively and the borehole wall is 10mm.
  • the second cylinder 14 is rotatable relative to and inside the first cylinder 12.
  • the second cylinder 14 is also rotatable relative to and inside an outer barrel 82.
  • the apparatus 10 is used to clean and therefore remove contamination from the wall of a borehole (not shown).
  • the inventor of apparatus 10 has realised that accurate geophysical logging of the borehole depends on the condition of the wall of the borehole. Contamination in or on the wall of the borehole affects and/or distorts the data obtained.
  • the contamination is normally drilling fluid.
  • Figure 1 also shows a system 80 for producing a borehole (not shown).
  • the system 80 includes the outer barrel 82 defining a throughbore 84, one end 86 of the outer barrel 82 comprising a core bit 88.
  • the outer barrel 82 is located in a borehole (not shown).
  • the outer diameter of the outer barrel 82 is similar to the inner diameter of the borehole.
  • the outer diameter of the outer barrel 82 is 95% of the inner diameter of the borehole.
  • the apparatus 10 can be located and secured in the throughbore 84 of the outer barrel 82.
  • the apparatus 10 may be referred to as a jet.
  • the jet or apparatus 10 includes the throughbore 20, also referred to as a conduit and two nozzles 30a and 30b at one end 16, the two nozzles 30a and 30b being in fluid communication with the throughbore or conduit 20.
  • Other tools can be located and secured in the throughbore 84 of the outer barrel 82.
  • the tools are not shown in the Figures but can include a plug, one end of the plug comprising a drill bit and an inner barrel adapted to receive a core sample.
  • the plug, inner barrel and jet that can be located in the throughbore are interchangeable so that the system can be used to drill, core and clean the borehole.
  • FIG. 2 is a cross-sectional perspective view of the nozzles 30a and 30b of the apparatus 10.
  • the nozzles 30a and 30b move relative to the second cylinder 14.
  • the nozzles 30a and 30b are pivotally attached to opposing sides of the first end 16 of the second cylinder 14.
  • the first end 16 of the second cylinder 14 includes a chamber 60 in fluid
  • the chamber 60 is cylindrical.
  • the chamber 60 has an inner diameter greater than the inner diameter of the throughbore 20 of the second cylinder 14.
  • the chamber 60 houses a piston 62.
  • the piston 62 moves inside the chamber 60.
  • An outer surface of the piston 62 contacts an inner surface of the chamber 60.
  • the chamber 60 has a channel 66; the channel 66 is in fluid communication with the throughbore 20 of the second cylinder 14 and the nozzles 30a and 30b.
  • the piston 62 surrounds the channel 66 so that the channel 66 passes through the centre of the piston 62. In use the piston 62 moves relative to the channel 66 and chamber 60.
  • An inner surface of the piston 62 contacts an outer surface of the channel 66.
  • Each nozzle 30a and 30b has an arm 32a and 32b respectively, the arms attached to the body 34. In use the arm 32a and 32b is rotatable relative to the body 34. Each nozzle 30a and 30b has an inlet 38a and 38b in fluid communication with the channel 66 in the chamber 60 and the throughbore 20 of the second cylinder 14 and an outlet 36a and 36b through which fluid is dischargeable. The outlets 36a and 36b can rotate relative to the longitudinal axis of the nozzles 30a and 30b.
  • Figure 3 is a perspective view of the nozzles 30a and 30b in the first retracted position.
  • Figure 4 is a perspective view of the nozzles 30a and 30b in the second open position.
  • the apparatus includes two actuators 40a and 40b that contact the piston 62 and a contact surface 42a and 42b on the nozzles 30a and 30b.
  • the actuators 40a and 40b extend through a wall of the chamber 60.
  • the actuators 40a and 40b are rods. In use the rods 40a and 40b move with the piston 62, relative to the wall of the chamber 60.
  • the actuators 40a and 40b extend out from the chamber 60 and press against the contact surfaces 42a and 42b respectively. This pushes the nozzles 30a and 30b from a first retracted position shown in Figure 3 into a second open position shown in Figure 4.
  • the arms 32a and 32b of the nozzles 30a and 30b are aligned with the longitudinal axis of the first 12 and second 14 cylinders.
  • the arms 32a and 32b of the nozzles 30a and 30b are offset from the longitudinal axis of the first 12 and second 14 cylinders.
  • the jet or apparatus 10 is deployed with the arms 32a and 32b in the first retracted position, before in use the arms 32a and 32b of the nozzles 30a and 30b move to the second open position.
  • the outlet (only 36a shown) is closer to the wall of the borehole (not shown) than compared to when the arms 32a and 32b are in the first retracted position.
  • the second cylinder 14 rotates relative to the first cylinder 12 and so the nozzles rotate relative to the outer barrel 82 and borehole (not shown).
  • the fluid discharged through the outlets 36a and 36b contacts the borehole wall and pushes the nozzles 30a and 30b away from the point of contact of the fluid on the borehole wall. This causes the nozzles 30a and 30b and so also the second cylinder 14 to rotate relative to the first cylinder 1
  • the arms 32a and 32b remain in the second open position until the jet or apparatus 10 is retrieved to surface through the throughbore of the outer barrel 82.
  • the arms 32a and 32b of the nozzles 30a and 30b contact against the outer barrel 82, so that movement of the jet or apparatus 10 through the throughbore of the outer barrel 82 pushes the arms 32a and 32b back to the first retracted position from the second open position.
  • Figure 5 is a cross-sectional view of the nozzle of the apparatus 10 showing the actuators 40a and 40b.
  • the chamber 60 includes the piston 62.
  • the rods or actuators 40a and 40b are shown contacting the arms 32a and 32b of the nozzles 30a and 30b.
  • fluid (not shown) is pumped along the throughbore 20 in the direction of the arrow 90 and exists at the first end 16 of the second cylinder 14.
  • the pressure of fluid acting on the surface of the piston 62 moves the piston 62 through the chamber 60 and so also the actuators 40a and 40b in contact with the other surface of the piston 62 through the wall of the chamber 60, thereby pushing the nozzles 30a and 30b (not shown) from the first retracted position from the second open position.

Abstract

An apparatus for cleaning a borehole, the apparatus comprising a first cylinder and a second cylinder locatable at least partially inside the first cylinder. The second cylinder has a first and a second end and a throughbore therebetween. The first end of the second cylinder comprises at least one nozzle which is in fluid communication with the throughbore. There is also herein described a system for producing a wellbore and a method of producing a borehole.

Description

AN APPARATUS, SYSTEM AND METHOD FOR CLEANING A BOREHOLE
The present invention relates to an apparatus, system and method for cleaning a borehole.
Various coring apparatus used to obtain a core sample from a borehole are known. Cutting and collecting a core sample may be referred to as geological logging. Other types of well logging or borehole logging are commonly used to analyse the rock or sediment of the borehole, including measurements made by lowering instruments into the borehole. This may be referred to as geophysical logging.
Geophysical logging may include measuring the electrical resistivity, porosity, density, and/or radioactivity of the rock or sediment of the borehole. There are other measurements that can be taken and these are well known to the person skilled in the art of bore or well logging.
In accordance with a first aspect of the present invention there is provided a cleaning apparatus for cleaning a borehole, the apparatus comprising:
a first cylinder; and
a second cylinder locatable at least partially inside the first cylinder, the second cylinder having a first and a second end and a throughbore therebetween;
wherein the first end of the second cylinder comprises at least one nozzle, the at least one nozzle being in fluid communication with the throughbore. The cleaning apparatus for cleaning a borehole in accordance with the first aspect of the present invention is typically suitable for cleaning a wall of the borehole. The wall of the borehole typically comprises the rock and/or other subterranean formation through which the borehole has been drilled or formed. Borehole drilling and logging operations have historically been separate stages of producing a borehole, drilling being suspended before borehole logging is started. This means that borehole logging is expensive.
The inventor of the present invention has realised that accurate logging and in particular geophysical logging of the borehole depends on the condition of the wall of the borehole. Contamination in or on the wall of the borehole may affect and/or distort the data obtained. Removing the contamination can improve the quality of the geophysical data obtained.
The contamination may comprise one or more of drilling fluid, drilling mud, and filter cake.
The first cylinder may be locatable at least partially inside an outer barrel. One end of the outer barrel may comprise a core bit. The core bit may be referred to as a centerless drill bit.
The outer barrel may be locatable in the borehole and may have an outer diameter that is similar to the inner diameter of the borehole. The outer diameter of the outer barrel is typically considered similar to the inner diameter of the borehole if the outer diameter of the outer barrel is from 80 to 100%, typically from 90 to 100% and may be from 95 to 100% of the inner diameter of the borehole.
It is an advantage of the present invention that the outer barrel has an outer diameter that is similar to the inner diameter of the borehole, because this helps to secure and/or stabilise the outer barrel, first cylinder locatable at least partially inside the outer barrel and the second cylinder locatable at least partially inside the first cylinder, relative to the borehole. The cleaning apparatus for cleaning a borehole according to first aspect of the present invention typically performs best if, in use, the distance between the at least one nozzle and the borehole wall is constant. In use, the distance between the at least one nozzle and the borehole and/or borehole wall may be from 100 to 1 mm, optionally from 70 to 10mm and typically from 30 to 10mm.
The second cylinder is typically rotatable relative to and may be rotatable inside the first cylinder. There may be one or more bearings between an outer surface of the second cylinder and an inner surface of the first cylinder.
One or more of and preferably all of the first cylinder, second cylinder and outer barrel may have a circular cross-section. The at least one nozzle may be moveable relative to the second cylinder. The at least one nozzle may be pivotally attached to the first end of the second cylinder. The at least one nozzle may be pivotable in and out of the longitudinal axis of the second cylinder.
The cleaning apparatus typically comprises two nozzles and may be more. When the cleaning apparatus comprises two nozzles, the two nozzles are typically pivotally attached to opposing sides of the first end of the second cylinder. The first end of the second cylinder may further include a chamber in fluid
communication with the throughbore and the at least one nozzle. The chamber is typically cylindrical. The chamber may have an inner diameter greater than the inner diameter of the throughbore of the second cylinder. The chamber typically houses a piston, the piston being moveable inside the chamber.
An outer surface of the piston is typically contactable against an inner surface of the chamber. There may be one or more seals between the outer surface of the piston and the inner surface of the chamber such that a fluid-tight seal is formable.
The chamber may comprise a channel, the channel being in fluid communication with the throughbore of the second cylinder and the at least one nozzle. The piston typically surrounds the channel, that is the channel passes through the centre of the piston. The piston maybe moveable relative to the channel. The piston may be moveable relative to the channel and chamber. The channel may be attached to the chamber.
An inner surface of the piston is typically contactable against an outer surface of the channel. There may be one or more seals between the inner surface of the piston and the outer surface of the channel such that a fluid-tight seal is formable.
The at least one nozzle typically comprises a body and an arm. One end of the arm is normally attached to the body. The arm is typically rotatable relative to the body.
The at least one nozzle may comprise an inlet in fluid communication with the channel in the chamber and/or the throughbore of the second cylinder and an outlet through which fluid can be discharged. The outlet may be at an opposing end of the arm. The outlet may be moveable, typically rotatable relative to the longitudinal axis of the at least one nozzle.
The cleaning apparatus may further include at least one actuator contactable with the piston and a contact surface of the at least one nozzle. There is normally one actuator per nozzle. The actuator is typically extendable through a wall of the chamber. The at least one actuator is typically a rod. In use the rod moves with the piston and moves relative to the wall of the chamber. In use, as the piston moves through the chamber the actuator extends out from the chamber and presses against the contact surface on the at least one nozzle, pushing the at least one nozzle from a first retracted position into a second open position. In the first retracted position the arm of the at least one nozzle is substantially aligned with the longitudinal axis of the first and/or second cylinder. In the second open position the arm of the at least one nozzle is typically offset from the longitudinal axis of the first and/or second cylinder.
In use, when the arm is in the second open position, the outlet is closer to the wall of the borehole compared to when the arm is in the first retracted position. The closer the outlet is to the wall of the borehole, the more effective the fluid dischargeable through the outlet may be in removing contamination in or on the wall of the borehole.
The fluid dischargeable through the outlet of the at least one nozzle may comprise one or more of water, brine and a detergent.
In use the second cylinder may rotate relative to and inside the first cylinder and so the at least one nozzle may rotate relative to the borehole. In use, the fluid dischargeable through the outlet of the at least one nozzle may contact the borehole wall such that the at least one nozzle is pushed away from the point of contact between the fluid and the borehole wall and the at least one nozzle and so also the second cylinder may rotate relative to the first cylinder.
The cleaning apparatus for cleaning a borehole according to the first aspect of the present invention may also or alternatively be an apparatus for increasing the inner diameter of the borehole. The fluid dischargeable through the outlet of the at least one nozzle may be used to increase the inner diameter of the borehole. Increasing the inner diameter of the borehole may be referred to as enlarging the borehole. Using the fluid dischargeable through the outlet of the at least one nozzle to increase the inner diameter of the borehole may be particularly useful when the borehole has been formed through brittle or at least relatively brittle formations comprising coal and/or loose sands. In use, fragments of the brittle or at least relatively brittle formations are typically removed and/or washed away from the borehole wall.
The fluid dischargeable through the outlet of the at least one nozzle may be discharged at a velocity of from 10 to 80m/s, preferably from 20 to 40m/s. The fluid dischargeable through the outlet of the at least one nozzle may be discharged at a flow rate of from 20 to 120GPM (from 0.00126 to 0.00757m3-s"1), preferably from 80 to 100GPM (from 0.00505 to 0.00631 m3-s"1).
The inner diameter of the borehole may be increased by from 1 to 20%, optionally by from 1 to 10% and normally by from 1 to 5%. The borehole may be used to extract one or more of crude oil, natural gas, water, minerals and geothermal heat.
The cleaning apparatus for cleaning a borehole in accordance with the first aspect of the present invention may be particularity suitable for use with a drill string.
In accordance with a second aspect of the present invention, there is provided a system for producing a borehole, the system comprising:
an outer barrel defining a throughbore, one end of the outer barrel comprising a core bit;
a cleaning apparatus as described herein, locatable in the throughbore of the outer barrel.
The system may also comprise a plug locatable in the throughbore of the outer barrel, one end of the plug comprising a drill bit; and alternatively or additionally the system may comprise an inner barrel locatable in the throughbore of the outer barrel, the inner barrel adapted to receive a core sample. The plug and/or inner barrel and the cleaning apparatus locatable in the throughbore of the outer barrel may be interchangeable to permit drilling, coring and cleaning of them borehole respectively.
In use, the outer barrel is run and/or lowered into the borehole and then one of the plug, inner barrel and cleaning apparatus are run or lowered into the borehole and into the throughbore of the outer barrel. It is an advantage of the present invention that the outer barrel remains in the borehole and only one of the plug, inner barrel and cleaning apparatus have to be tripped and/or raised out of the borehole before another one of the plug, inner barrel and cleaning apparatus is run and/or lowered into the borehole. Tripping and/or raising one of the plug, inner barrel and cleaning apparatus out of the borehole may be referred to as fishing and may use wireline. This saves the time and cost of tripping and running the outer barrel out of and then back into the borehole so that the borehole can be cleaned for borehole logging.
The cleaning apparatus may be securable in the throughbore of the outer barrel. When the cleaning apparatus is secured in the throughbore of the outer barrel, both the outer barrel and the cleaning apparatus may be tripped and/or raised out of the borehole together. This has the advantage that tripping and/or raising the outer barrel and the cleaning apparatus requires no additional trip compared to tripping and/or raising only the outer barrel.
The at least one nozzle of the cleaning apparatus typically comprises a body and an arm. One end of the arm is normally attached to the body. The arm is typically rotatable relative to the body. In a first retracted position the arm of the at least one nozzle is substantially aligned with the longitudinal axis of the first and/or second cylinder. In a second open position the arm of the at least one nozzle is typically offset from the longitudinal axis of the first and/or second cylinder.
It is an advantage of the present invention that the cleaning apparatus can be deployed with the arm of the at least one nozzle in the first retracted position before, in use, the arm of the at least one nozzle moves to the second open position. This reduces the outer diameter of the cleaning apparatus for deployment but does not limit the effectiveness of the at least one nozzle of the cleaning apparatus to remove contamination in or on the wall of the borehole because, in use, the at least one nozzle is deployable close to the borehole wall.
After the cleaning apparatus and therefore also the at least one nozzle has been used to clean the walls of the borehole, the arm of the at least one nozzle typically remains in the second open position until the cleaning apparatus is retrieved to surface through the throughbore. Contacting the arm of the at least one nozzle against the outer barrel, such that there is continued movement of the cleaning apparatus through the throughbore, pushes the arm back to the first retracted position from the second open position.
The optional features of the first, third and fourth aspects of the present invention can be incorporated into the second aspect of the present invention and vice versa. In accordance with a third aspect of the present invention, there is provided a method of cleaning a borehole, the method comprising the steps:
providing an outer barrel in a borehole, the outer barrel defining a throughbore, one end of the outer barrel comprising a core bit;
inserting a cleaning apparatus as described herein into the throughbore of the outer barrel; and
ejecting a fluid from the at least one nozzle of the cleaning apparatus, the fluid contacting a wall of the borehole.
The ejecting step normally occurs when the outer barrel is being moved in a pre- existing borehole. For example, after forming a borehole the outer barrel is retracted from the borehole, and the ejecting step happens as the outer barrel is being removed.
Normally therefore, the ejecting step does not happen at the same time as forming a borehole using the core bit. Nevertheless, the method of cleaning the borehole may be part of a method of producing a borehole.
Thus in a fourth aspect the invention provides a method of producing a borehole, the method comprising the steps:
drilling at least a portion of the borehole with an outer barrel defining a throughbore, one end of the outer barrel comprising a core bit and a plug locatable in the throughbore, one end of the plug comprising a drill bit; removing the plug from the outer barrel;
inserting a cleaning apparatus as described herein into the throughbore of the outer barrel; and
ejecting a fluid from the at least one nozzle of the cleaning apparatus, the fluid contacting a wall of the borehole.
The ejecting step normally occurs when the outer barrel is being moved in the borehole formed earlier in the method according to the fourth aspect of the invention. For example, after drilling to form the portion of the borehole, the outer barrel is retracted from the borehole, and the ejecting step happens as the outer barrel is being removed.
Normally therefore, the ejecting step does not happen at the same time as the drilling step. The cleaning apparatus for cleaning a borehole according to the fourth aspect of the present invention may also or alternatively be an apparatus for increasing the inner diameter of the borehole.
The method may include the steps of inserting the apparatus into the throughbore of the outer barrel and ejecting a fluid from the at least one nozzle of the apparatus, the fluid contacting a wall of the borehole.
The method may then include the step of increasing the inner diameter of the borehole by removing and/or washing away fragments of the formation through which the borehole is formed using the fluid ejected from the at least one nozzle of the apparatus.
The method of the third or fourth aspect may further include the step of drilling at least a portion of the borehole with the outer barrel and collecting a core sample in a core barrel locatable in the throughbore. Normally this happens at a different time to the ejecting step.
The step of removing the plug from the outer barrel may include running or lowering a hook into the borehole and attaching the hook to the plug before tripping or raising the plug out of the outer barrel and borehole. The step of inserting a cleaning apparatus into the outer barrel may include running or lowering the cleaning apparatus into the borehole.
The method of the third or fourth aspects may further include the step of removing the cleaning apparatus and outer barrel from the borehole whilst the cleaning apparatus is located in the outer barrel.
The optional features of the first and second aspects of the present invention can be incorporated into the third or fourth aspects of the present invention and vice versa.
An embodiment of the invention will now be described by way of example only and with reference to the accompanying drawings, in which:
Figure 1 is a cross-sectional perspective view of the apparatus according to an embodiment of the present invention;
Figure 2 is a cross-sectional perspective view of the nozzles of the apparatus;
Figure 3 is a perspective view of the nozzles in the first retracted position;
Figure 4 is a perspective view of the nozzles in the second open position; and
Figure 5 is a cross-sectional view of the nozzles and actuators of the apparatus. Figure 1 shows an apparatus 10 for cleaning a borehole. The apparatus 10 includes a first cylinder 12 and a second cylinder 14 located partially inside the first cylinder 12. The second cylinder 14 has a first 16 and a second 18 end and a throughbore 20 therebetween. Two nozzles 30a and 30b are attached to the first end 16 of the second cylinder 14.
The two nozzles 30a and 30b are in fluid communication with the throughbore 20.
Each nozzle 30a and 30b has an arm 32a and 32b respectively, the arms are attached to a body 34. Each nozzle 30a and 30b also has an outlet 36a and 36b respectively, through which in use, fluid (not shown) is discharged.
The borehole and borehole wall are not shown. In use, the distance between the outlets 36a and 36b of the two nozzles 30a and 30b respectively and the borehole wall is 10mm. The second cylinder 14 is rotatable relative to and inside the first cylinder 12. The second cylinder 14 is also rotatable relative to and inside an outer barrel 82. There are bearings 22a and 22b between an outer surface 24 of the second cylinder 14 and an inner surface 26 of the first cylinder 12.
In use, the apparatus 10 is used to clean and therefore remove contamination from the wall of a borehole (not shown). The inventor of apparatus 10 has realised that accurate geophysical logging of the borehole depends on the condition of the wall of the borehole. Contamination in or on the wall of the borehole affects and/or distorts the data obtained. The contamination is normally drilling fluid.
Figure 1 also shows a system 80 for producing a borehole (not shown). The system 80 includes the outer barrel 82 defining a throughbore 84, one end 86 of the outer barrel 82 comprising a core bit 88. In use, the outer barrel 82 is located in a borehole (not shown). The outer diameter of the outer barrel 82 is similar to the inner diameter of the borehole. The outer diameter of the outer barrel 82 is 95% of the inner diameter of the borehole.
The apparatus 10 can be located and secured in the throughbore 84 of the outer barrel 82. The apparatus 10 may be referred to as a jet. The jet or apparatus 10 includes the throughbore 20, also referred to as a conduit and two nozzles 30a and 30b at one end 16, the two nozzles 30a and 30b being in fluid communication with the throughbore or conduit 20. Other tools can be located and secured in the throughbore 84 of the outer barrel 82. The tools are not shown in the Figures but can include a plug, one end of the plug comprising a drill bit and an inner barrel adapted to receive a core sample. The plug, inner barrel and jet that can be located in the throughbore are interchangeable so that the system can be used to drill, core and clean the borehole.
In use, the outer barrel 82 is run into the borehole (not shown) and then one of the plug, inner barrel and jet 10 are run into the borehole and into the throughbore 84 of the outer barrel 82. The outer barrel 82 remains in the borehole and only one of the plug, inner barrel and jet 10 have to be tripped out of the borehole before another one of the plug, inner barrel and jet 10 is run into the borehole. Figure 2 is a cross-sectional perspective view of the nozzles 30a and 30b of the apparatus 10.
The nozzles 30a and 30b move relative to the second cylinder 14. The nozzles 30a and 30b are pivotally attached to opposing sides of the first end 16 of the second cylinder 14.
The first end 16 of the second cylinder 14 includes a chamber 60 in fluid
communication with the throughbore 20 and nozzles 30a and 30a. The chamber 60 is cylindrical. The chamber 60 has an inner diameter greater than the inner diameter of the throughbore 20 of the second cylinder 14.
The chamber 60 houses a piston 62. In use the piston 62 moves inside the chamber 60. An outer surface of the piston 62 contacts an inner surface of the chamber 60. There are seals 64 between the outer surface of the piston 62 and the inner surface of the chamber 60 to form a fluid-tight seal.
The chamber 60 has a channel 66; the channel 66 is in fluid communication with the throughbore 20 of the second cylinder 14 and the nozzles 30a and 30b. The piston 62 surrounds the channel 66 so that the channel 66 passes through the centre of the piston 62. In use the piston 62 moves relative to the channel 66 and chamber 60.
An inner surface of the piston 62 contacts an outer surface of the channel 66. There are seals 68 between the inner surface of the piston 62 and the outer surface of the channel 66 to form a fluid-tight seal.
Each nozzle 30a and 30b has an arm 32a and 32b respectively, the arms attached to the body 34. In use the arm 32a and 32b is rotatable relative to the body 34. Each nozzle 30a and 30b has an inlet 38a and 38b in fluid communication with the channel 66 in the chamber 60 and the throughbore 20 of the second cylinder 14 and an outlet 36a and 36b through which fluid is dischargeable. The outlets 36a and 36b can rotate relative to the longitudinal axis of the nozzles 30a and 30b.
Figure 3 is a perspective view of the nozzles 30a and 30b in the first retracted position. Figure 4 is a perspective view of the nozzles 30a and 30b in the second open position. In use the nozzles 30a and 30b can pivot in and out of the longitudinal axis of the second cylinder 14. The apparatus includes two actuators 40a and 40b that contact the piston 62 and a contact surface 42a and 42b on the nozzles 30a and 30b. There is one actuator 40a and 40b per nozzle 30a and 30b. The actuators 40a and 40b extend through a wall of the chamber 60. The actuators 40a and 40b are rods. In use the rods 40a and 40b move with the piston 62, relative to the wall of the chamber 60.
As the piston 62 moves through the chamber 60, the actuators 40a and 40b extend out from the chamber 60 and press against the contact surfaces 42a and 42b respectively. This pushes the nozzles 30a and 30b from a first retracted position shown in Figure 3 into a second open position shown in Figure 4. In the first retracted position the arms 32a and 32b of the nozzles 30a and 30b are aligned with the longitudinal axis of the first 12 and second 14 cylinders. In the second open position the arms 32a and 32b of the nozzles 30a and 30b are offset from the longitudinal axis of the first 12 and second 14 cylinders. The jet or apparatus 10 is deployed with the arms 32a and 32b in the first retracted position, before in use the arms 32a and 32b of the nozzles 30a and 30b move to the second open position.
Deploying the jet or apparatus 10 with the arms 32a and 32b retracted reduces the outer diameter of the jet or apparatus 10. Moving the outlets 36a and 36b of the nozzles 30a and 30b closer to the wall of the borehole (not shown) increases the efficiency of the removal of contamination in or on the wall of the borehole.
In use, when the arms 32a and 32b are in the second open position, the outlet (only 36a shown) is closer to the wall of the borehole (not shown) than compared to when the arms 32a and 32b are in the first retracted position.
In use the second cylinder 14 rotates relative to the first cylinder 12 and so the nozzles rotate relative to the outer barrel 82 and borehole (not shown). In use, the fluid discharged through the outlets 36a and 36b contacts the borehole wall and pushes the nozzles 30a and 30b away from the point of contact of the fluid on the borehole wall. This causes the nozzles 30a and 30b and so also the second cylinder 14 to rotate relative to the first cylinder 1
After the jet or apparatus 10 has been used to clean the walls of the borehole, the arms 32a and 32b remain in the second open position until the jet or apparatus 10 is retrieved to surface through the throughbore of the outer barrel 82. The arms 32a and 32b of the nozzles 30a and 30b contact against the outer barrel 82, so that movement of the jet or apparatus 10 through the throughbore of the outer barrel 82 pushes the arms 32a and 32b back to the first retracted position from the second open position.
Figure 5 is a cross-sectional view of the nozzle of the apparatus 10 showing the actuators 40a and 40b. The chamber 60 includes the piston 62. The rods or actuators 40a and 40b are shown contacting the arms 32a and 32b of the nozzles 30a and 30b. In use, fluid (not shown) is pumped along the throughbore 20 in the direction of the arrow 90 and exists at the first end 16 of the second cylinder 14. The pressure of fluid acting on the surface of the piston 62 moves the piston 62 through the chamber 60 and so also the actuators 40a and 40b in contact with the other surface of the piston 62 through the wall of the chamber 60, thereby pushing the nozzles 30a and 30b (not shown) from the first retracted position from the second open position.
Modifications and improvements can be incorporated herein without departing from the scope of the invention.

Claims

An apparatus for cleaning a borehole, the apparatus comprising:
a first cylinder; and
a second cylinder locatable at least partially inside the first cylinder, the second cylinder having a first and a second end and a throughbore
therebetween;
wherein the first end of the second cylinder comprises at least one nozzle, the at least one nozzle being in fluid communication with the throughbore.
An apparatus according to claim 1 , wherein the first cylinder is locatable at least partially inside an outer barrel.
An apparatus according to claim 2, wherein the outer barrel is locatable in the borehole and has an outer diameter that is from 80 to 100% of an inner diameter of the borehole.
An apparatus according to any preceding claim, wherein in use, the distance between the at least one nozzle and a wall of the borehole is from 100 to 1 mm.
An apparatus according to any preceding claim, wherein the second cylinder is rotatable relative to and inside the first cylinder.
An apparatus according to any preceding claim, wherein the at least one nozzle is moveable relative to the second cylinder.
An apparatus according to any preceding claim, wherein the first end of the second cylinder further comprises a chamber in fluid communication with the throughbore and the at least one nozzle.
8. An apparatus according to claim 7, wherein the chamber houses a
piston, the piston being moveable inside the chamber.
9. An apparatus according to claim 8, wherein an outer surface of the piston is contactable against an inner surface of the chamber.
10. An apparatus according to claim 9, wherein there are one or more seals between the outer surface of the piston and the inner surface of the chamber such that a fluid-tight seal is formable.
1 1. An apparatus according to any one of claims 7 to 10, wherein the
chamber comprises a channel, the channel being in fluid communication with the throughbore of the second cylinder and the at least one nozzle.
12. An apparatus according to claim 1 1 , wherein the at least one nozzle comprises an inlet in fluid communication with the channel in the chamber and the throughbore of the second cylinder and an outlet through which fluid can be discharged.
13. An apparatus according to any one of claims 8 to 12, further comprising at least one actuator contactable with the piston and a contact surface of the at least one nozzle.
14. An apparatus according to claim 13, wherein the at least one nozzle comprises a body and an arm and wherein in use, as the piston moves through the chamber the actuator extends out from the chamber and presses against the contact surface on the at least one nozzle, pushing the at least one nozzle from a first retracted position into a second open position.
15. An apparatus according to claim 14, wherein in the first retracted
position the arm of the at least one nozzle is substantially aligned with the longitudinal axis of the first and second cylinder and in the second open position the arm of the at least one nozzle is offset from the longitudinal axis of the first and second cylinder.
16. A system for producing a wellbore, the system comprising:
an outer barrel defining a throughbore, one end of the outer barrel comprising a core bit; a plug locatable in the throughbore, one end of the plug comprising a drill bit;
an inner barrel locatable in the throughbore, the inner barrel adapted to receive a core sample; and
a jet locatable in the throughbore, the jet comprising a conduit and at least one nozzle at one end, the at least one nozzle being in fluid
communication with the conduit;
wherein the plug, inner barrel and jet locatable in the throughbore are interchangeable to permit drilling, coring and cleaning of the wellbore respectively.
17. A system according to claim 16, wherein in use, the outer barrel is run into the borehole and then one of the plug, inner barrel and jet are run into the borehole and into the throughbore of the outer barrel.
18. A system according to claim 16 or claim 17, wherein the jet comprises:
a first cylinder; and
a second cylinder locatable at least partially inside the first cylinder, the second cylinder having a first and a second end and a throughbore
therebetween;
wherein the first end of the second cylinder comprises at least one nozzle, the at least one nozzle being in fluid communication with the throughbore.
19. A system according to any one of claims 16 to 18, wherein the at least one nozzle comprises a body and an arm, one end of the arm being attached to the body and the arm being rotatable relative to the body.
20. A system according to claim 19, wherein in a first retracted position the arm of the at least one nozzle is substantially aligned with the longitudinal axis of the first and second cylinder.
21. A system according to claim 20, wherein in a second open position the arm of the at least one nozzle is typically offset from the longitudinal axis of the first and second cylinder.
22. A method of producing a borehole, the method comprising the steps: drilling at least a portion of the borehole with an outer barrel defining a throughbore, one end of the outer barrel comprising a core bit and a plug locatable in the throughbore, one end of the plug comprising a drill bit;
removing the plug from the outer barrel;
inserting a jet into the outer barrel, the jet comprising a conduit and at least one nozzle at one end, the at least one nozzle being in fluid
communication with the conduit; and
ejecting a fluid from the at least one nozzle, the fluid contacting a wall of the borehole.
23. A method according to claim 22, wherein the method further comprises the step of drilling at least a portion of the borehole with the outer barrel and collecting a core sample in a core barrel locatable in the throughbore.
24. A method according to claim 22 or claim 23, wherein the method further comprises the step of removing the jet and outer barrel from the borehole whilst the jet is located in the outer barrel.
25. A method according to any one of claims 22 to 24, wherein the jet
comprises:
a first cylinder; and
a second cylinder locatable at least partially inside the first cylinder, the second cylinder having a first and a second end and a throughbore
therebetween;
wherein the first end of the second cylinder comprises at least one nozzle, the at least one nozzle being in fluid communication with the
throughbore.
PCT/GB2014/052139 2013-07-31 2014-07-14 Apparatus, system and method for cleaning a borehole WO2015015159A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB201313737A GB201313737D0 (en) 2013-07-31 2013-07-31 Apparatus and system
GB1313737.7 2013-07-31
GB1315907.4 2013-09-06
GB201315907A GB201315907D0 (en) 2013-07-31 2013-09-06 Apparatus and system

Publications (2)

Publication Number Publication Date
WO2015015159A2 true WO2015015159A2 (en) 2015-02-05
WO2015015159A3 WO2015015159A3 (en) 2015-07-16

Family

ID=49167288

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/052139 WO2015015159A2 (en) 2013-07-31 2014-07-14 Apparatus, system and method for cleaning a borehole

Country Status (2)

Country Link
GB (2) GB201313737D0 (en)
WO (1) WO2015015159A2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169592A (en) * 1962-10-22 1965-02-16 Lamphere Jean K Retrievable drill bit
CA1325969C (en) * 1987-10-28 1994-01-11 Tad A. Sudol Conduit or well cleaning and pumping device and method of use thereof
GB2365463B (en) * 2000-08-01 2005-02-16 Renovus Ltd Drilling method
US7252164B2 (en) * 2004-04-01 2007-08-07 Smith International, Inc Cutting structure based hydraulics
US7686102B2 (en) * 2006-03-31 2010-03-30 Jerry Swinford Jet motor for providing rotation in a downhole tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
GB201313737D0 (en) 2013-09-11
GB201315907D0 (en) 2013-10-23
WO2015015159A3 (en) 2015-07-16

Similar Documents

Publication Publication Date Title
RU2436951C2 (en) Sampling device and methods of samples of formation fluid medium
US9988878B2 (en) One trip cleaning and tool setting in the cleaned location
RU2319005C2 (en) Downhole tool and method for underground reservoir data accumulation
CA2467863C (en) Downhole sampling apparatus and method
US7690423B2 (en) Downhole tool having an extendable component with a pivoting element
CA2999363C (en) Devices and methods for imaging wells using phased array ultrasound
EP3298238B1 (en) Sealed core storage and testing device for a downhole tool
US8919460B2 (en) Large core sidewall coring
WO2009083805A2 (en) Subsurface formation core acquisition system usinghigh speed data and control telemetry
GB2441843A (en) Borehole testing method including selecting the length of the interval to be sealed between two packer elements
US20210003003A1 (en) Drill stem testing
US20230243258A1 (en) Downhole tool with filtration device
WO2020139918A1 (en) Systems and methods for logging while treating
CN105378220A (en) Receiving and measuring expelled gas from a core sample
US8967242B2 (en) Auxiliary flow line filter for sampling probe
EP2825729B1 (en) Systems and methods for cleaning a well face during formation testing operations
US20140224511A1 (en) Pump Drain Arrangements For Packer Systems And Methods For Sampling Underground Formations Using Same
US9422811B2 (en) Packer tool including multiple port configurations
US9790789B2 (en) Apparatus and method for obtaining formation fluid samples
WO2015015159A2 (en) Apparatus, system and method for cleaning a borehole
US20150176405A1 (en) Packer Tool Including Multiple Ports For Selective Guarding And Sampling
WO2012006093A2 (en) Fluid sampling tool
US11913331B1 (en) Systems and methods for recovering and protecting sidewall core samples in unconsolidated formations
CN208702376U (en) Eccentric guide way scraper

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14745221

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14745221

Country of ref document: EP

Kind code of ref document: A2