Our slickline services reduce well intervention costs and increase production. Experienced, well trained personnel can reduce the frequency of trips into the well and restore full production with a minimum of non-productive downtime.
Innovative technology enhances remedial service work. Perforating, tubing cutting, and packer setting are conducted on slickline, which saves you money.
AJM Slickline services use state-of-the-art capable of spooling out 25,000 feet of metal wire ranging from 0.108 to 0..125 inches in thickness into a range of differently configured oil or gas wellbores. We specialize in:
removing unwanted obstructions
obtaining bottom hole pressures upto 20K Psi.
measuring temperatures as high as 200 °C / 395 °F
increasing well production and control flow
plugs
downhole fishing
swabbing
All the information we gather is transferred to our labs for timely delivery to our clients. For rush jobs the information can be transferred from our trucks via a linked network and analyzed in our labs quickly for situations that need to be addressed immediately.
oiltools
Saturday, June 12, 2010
Tubing-Conveyed Perforating
In April 2007, GEODynamics introduced a new class of Reactive™ perforating shaped charge that delivers a stepchange improvement in perforation tunnel geometry and performance. The CONNEX™ perforating product generates a secondary reaction in the perforation tunnel thanks to proprietary liner metallurgy and charge design. CONNEX™ perforating technology was developed under license fromQinetiQ with the vision and support of Shell.
CONNEX™ Perforating delivers debris-free tunnels with no crushed zone, even in lowquality rock and with no need for significant underbalance during perforating. Depth of penetration and casing entry hole diameter are comparable to leading conventional deeppenetrating charges. Because the external profiles of CONNEX™ charges are identical to conventional products, they can be deployed in existing hardware, following standard operating procedures.
The CONNEX™ family of products is the first to be entirely developed and optimized for flow performance, using all natural rock targets. Testing in GEODynamics’ flow laboratory under representative stress and pressure conditions shows perforations shot with CONNEX™ charges deliver more than 30% greater flow than those shot with leading conventional charges.
…debris-free tunnels with no crushed zone…
…more than 30% greater flow…
So How Does it Work?
When a CONNEX™ Perforating charge is fired, it initially behaves exactly like a conventional shaped charge. The main explosive load detonates, evolving a huge volume of gas and generating tremendous pressure. As the detonation wave advances through the main body of the charge it collapses the conical metal liner toward its axis, producing a high velocity jet of particles moving at over 20,000 ft/sec. Along the axis of the cone, particle collision pressures as high as 15 million psi are generated. The particle jet pushes aside and plastically deforms the gun body, wellbore casing, cement, and formation. Rock grains are pulverized and displaced radially, forming the perforation tunnel. Finely crushed rock together with mud, cement, and charge debris is forced into the pore throats of the surrounding rock, leading to a ‘crushed’ or ‘altered’ zone of reduced permeability.
Whereas perforation with conventional charges depends on flow from the undamaged matrix to the wellbore to remove the crushed zone and any debris that may be obstructing the tunnel, CONNEX™ Perforating introduces a secondary Reactive™ effect that makes flow unnecessary. A carefully controlled bimetallic combination within the powdered metal liner reacts under the tremendous pressures of detonation and liner collapse. This Hume-Rothery reaction is highly exothermic and takes place in the perforation tunnel microseconds after it has formed. The energy released supercharges the near-tunnel region, creating a surge of flow into the wellbore. This flow removes material from the entire tunnel length, including the impermeable but relatively weak crushed zone. Since every tunnel is subjected to this secondary reaction they are all cleaned out, irrespective of differences in rock quality or local pressure conditions.
CONNEX™ Perforating In Action
The photographs below provide a side-by-side comparison of perforation tunnels created with conventional and CONNEX™ products. Figures 7 and 8 show tests shot under moderate confining stress. Figures 9 and 10 show tests shot under higher confining stress. All tests were carried out with 25g HMX deeppenetrating shaped charges and Berea sandstone targets. In both cases, the CONNEX™ tunnel delivered a productivity ratio more than 30% greater than the conventional equivalent.
Six Things to Remember about CONNEX™ Perforating
Clean tunnels without having to apply significant drawdown
Clean tunnels even in poor or heterogeneous formations
Reactive™ effect in every tunnel means all tunnels clean up
>30% increase in productivity compared to conventional charges
Drops into conventional equipment, wireline or TCP
The first in a new class of perforators optimized for flow
Drill Stem Testing
We design Drill Stem Test (DST) jobs to achieve your test objectives economically. Whether your goal is to determine reservoir pressure, permeability, skin, or productivity, our down hole technology delivers the right answers.
Accurate down hole pressure measurements, even under very hostile conditions, increase your confidence in reservoir characterization.
Flexibility in the DST string design gives you reservoir information from multiple zones on the same test, saving rig time and allowing you to update your reservoir model sooner.
Full Bore Test Packers
The Full Bore Test Packer (FBTP) is specially designed for Full Bore Drill Stem Testing (DST) and Tubing Conveyed Perforating (TCP) operations.
During TCP operations where the detonation of the TCP charges can cause rapid pressure surges, the hydraulic hold downs react to prevent packer movement.
The full opening design allows unrestricted fluid flow and tool movement through the tubing bore. A pressure balanced bypass valve which is held open when running and retrieving, prevents swabbing effect. The valve also allows debris to be washed from the top of the packer when releasing. The bypass valve is held closed by pressure from below and in turn helps prevent upward movement of tubing.
Available in sizes
for use in casing sizes from 4“ up to 13-3/8” and several models from low pressure sweet service to high pressure high temperature hostile environment H2S and CO2 Service Packers.
Full Bore Tension Safety Joint
The Full Bore Tension Safety Joint (TJ-1001) is a two stage disconnect tool which is run above the packer that allows the tubing to be disconnected from the tool string below it should the need arise. The TJ first requires a predetermined tensile load to be applied from surface in order to sever the shear ring assembly which initiates the disconnection. The tensile load required to shear is dependent of specific requirements and ranges from 4,000 to 66,000 pounds (this figure includes the weight of the test string below the TJ). The second stage of disconnection requires right hand torqueto be applied to the tubing while simultaneously stroking it vertically approximately nine inches. Disconnection requires two strokes per revolution and approximately six revolutions are required. The inner mandrel of the tool is indexed to both the splined housing and the release nut. In rotating the tubing to the right the mandrel indexes the release nut which has a left hand thread, unscrewing it from the body and separating the tool. In the unlikely event that the shear pin assembly is severed unintentionally during operations the tool will not separate unless right-hand torque and vertical stroking are applied.
Available in two sizes
STJ-1001 3.125“OD x 1.125“ID
TJ-1001 5.000”OD x 2.250”ID
Full Bore Hydraulic Jar
Full Bore Hydraulic Jar (FBHJ) is a straight-pull operated jar with a closed hydraulic system and a unique balance piston used to equalize oil pressure with tubing pressure. The FBHJ is also able to transmit torque to the right at any position along full stroke.
The FBHJ is designed for easy control of the jarring action by the operator. The time delay impact control is allowed for by use of Flow Restrictors between the upper and lower oil chambers. Fluid flow is restricted only in the upward pull direction so the jar is easily reset for subsequent jars.
Due to the balance piston, the hydraulic section is sealed to well bore fluids however is balanced to tubing pressure. This helps reduce tool wear and the potential of seal failure.
Available in two sizes
#SHJ-1001 3.125“ODx1.125“ID
# NHJ-1001 5.000”ODx2.250”ID
Full Bore Gauge Carriers
The Full Bore Gauge Carrier (FBGC) has been designed as a single body type carrier capable of housing up to four QUARTZ DIGITAL or Piezo- Resistive Electronic Memory Pressure / Temperature Gauges. The gauges are attached to the housing with metal seal connectors and are retained below the O.D. of the carrier to protect the gauges from damage while running the string. The carrier can be configured to provide outside and inside position electronic recorders. The gauge carrier can be custom designed to client’s requirements.
Available in two sizes
3.125“OD x 1.125“ID
5.000”OD x 2.250”I
Full Bore Tester Valves
The Full Bore Tester Valve is an annulus pressure controlled ball valve and is designed to allow multiple cycles during cased hole testing and perforating operations. It is fully balanced to annulus pressure and will remain in the closed position while tripping in hole. Operation of the FBTV insensitive to tubing pressure changes. The FBTV is a spring loaded normally closed ball valve. Spring force holds the valve in the closed position. It is opened and maintained open by applying additional pressure to the annulus. When applied annulus pressure is released, the ball valve will close. Fluid at hydrostatic pressure is trapped behind the nitrogen chamber acting against a piston, compressing the nitrogen to hydrostatic pressure. The nitrogen then acts against the lower piston, the same hydrostatic pressure that is acting against the lower piston is also passing through pressure ports, located in the upper outer housing acting against the upper piston. Both the upper and lower piston have the same cross-sectional area, thus keeping the ball valve balanced. Therefore, the only load holding the ball valve closed is the compression spring. One of two different unique ratchet sleeves are available. Depending on which ratchet is used, the ball valve will open with applied annulus pressure and will close, or lock open, once pressure is released. The FBTV has a splined lower end and will allow torque to be applied through the tool.
Available in two sizes
# 444665 3.125“OD x 1.125“ID
# 444867 5.000”OD x 2.250”ID
Full Bore Circulating Valves
The Full Bore Circulating Valve (FBCV) is opened and closed by increasing and bleeding off tubing pressure. This allows the FBCV to be used in both open hole and cased-hole testing, and is completely independent of tools actuated by differential pressure. The FBCV Indexing Mandrel shifts up when internal tubing pressure is increased to hydrostatic pressure plus 500 psi. Once tubing pressure is released annulus pressure will force the indexing mandrel back to its original position. A guide sleeve will restrict movement of the indexing mandrel forcing the valve to stay closed.
At a predetermined number of these up/down cycles, the guide sleeve will allow the indexing mandrel to shift all the way down exposing ports for reverse circulation. The next increase in tubing pressure will shift the indexing mandrel all the way up exposing ports for tubing to annulus circulation. Once the increased tubing pressure is released, the indexing mandrel will shift back down to its original closed position. The FBCV is
again ready to repeat its cycling sequence.
Available in two sizes
421303 3.125“OD x 1.125“ID
459214 5.000”OD x 2.250”ID
Full Bore Exit Valves
The EXIT Valve is an annulus pressure controlled single function Sleeve Valve. The tool is to be used during simple cased hole testing and perforating operations at the end of the program when circulation from the tubing to the annulus is necessary. The is fully balanced to tubing pressure and will remain in position until cycled. Once the EXIT Valve is opened the EXIT Valve cannot be reclosed. The EXIT Valve sleeve valve is operated by a differential piston and controlled by annulus pressure. Annulus hydrostatic pressure is calculated at packer depth prior to the EXIT Valve being run downhole, to ensure the correct selection of rupture disc. The EXIT Valve is run in the hole in the closed position. When the tool is required to be opened, pressure is applied to the annulus. The Rupture Disc breaks, allowing the Differential Piston to move, shearing the Shear Pins in the Shear Sleeve and allowing circulation between the tubing and the annulus. As the Sleeve moves further, a ratchet lock ring engages, preventing the Sleeve from moving.
EXIT Valve
Available in two sizes
NSKV1000 3.125“OD x 1.125“ID
463252 5.000”OD x 2.250”ID
Full Bore Expansion Joints
The Full Bore Expansion Joint (FBEJ) compensates for expansion and contraction of the test string during testing operations. The test string is fixed at two points, the Hanger or the Slick Joint in theBOPStack and at the Packer.
Utilizing annular and tubing piston areas the Expansion Joint is both pressure and volume balanced. This eliminates any axial loading on the tool due to internal or external pressure and prevents a change in the volume or pressure of the annulus or tubing as the tool reciprocates. During the test, the test string will be subject to varying temperatures and pressure effects which will cause changes in the test string length. The Expansion Joints must be used to compensate otherwise string buckling, fracture or packer displacement could occur. The number of Expansion Joints required in a test string depends on the test program and well conditions.
Available in two sizes
NEJ-3501 3.125“OD x 1.125“ID
NEJ-1001 5.000”OD x 2.250”ID
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