Monthly Archives: May 2013
NOV Brandt King Cobra HYBRID shaker
The King Cobra HYBRID shaker combines the reliable King Cobra standard skid, backtank, and screen angle adjustment features, combined with the newly redesigned King Cobra Venom Shaker basket. Offered with a variety of high performance options that can be ordered initially or installed in the field regardless of original factory configuration, the King Cobra HYBRID shaker provides the flexibility to meet your changing needs.
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FEATURES |
BENEFITS |
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Rugged basket design |
Improved energy transfer from shaker basket to screen |
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Minimal replacement parts |
Small parts inventory |
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Linear motion (available on all configurations) |
Rapidly separates and discharges solids |
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Tuned elliptical motion (available on models configured with dual motion option) |
Removes large, sticky, hydrated clay and other troublesome solids |
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Dual motion configuration |
Allows selection of vibration motion most suitable |
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Patented drying deck |
Reduces mud losses via a dry solids discharge |
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Deck angles (0°, +5°, +5°, +5°) |
Increases screen life by diminishing mud pool volume |
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VNM series screens |
• Larger screening area (33.4 ft² or 3.1 m²) • Cost saving with elimination of crown rubbers • Repairable screens • Screen leakage eliminated |
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Patented pin and hole screen securing system |
Screen secured snugly to basket with no slipping |
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Redesigned screen wedge |
Easy, ratchet type installation, installs from the front |
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Manual Flywheel deck angle adjustment mechanism |
Quick and easy deck angle adjustments |
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Epoxy and glass flake paint system |
Longer paint life |
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Cable clamp design |
Clean, quick installation of wiring |
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Available with Constant-G Control® (CGC) |
Increased process capacity |
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Available with 3.5 hp |
Increased nominal G-Force |
High quality Shale shakers in China
Shale shakers separate solids from liquids by utilizing a vibrating basket, which is outfitted with specially designed and sized screens. Shakers are considered the most important tool for removing drilled solids. These units remove the majority of drilled solids generated during the typical drilling process. Shale shakers typically generate between five to over eight G-forces of energy for removing solids from the mud system.
Shakers are positioned after the mud/gas separator and gumbo equipment (if utilized) and before any other solids removal equipment. Rigs may employ any number of shale shakers, depending on the specific drilling parameters of the well. Typically, several shakers are utilized for normal drilling operations. Additional shakers are added in response to a specific well program. 
DC Machinery manufactures several models of shale shakers, each targeting a specific segment of the market. These shakers are employed on rigs ranging in size from small work-over land rigs to large offshore platforms.
Shale shakers are just one of the many solids control and waste management offerings that DC Machinery supplies to the oil and gas industry.
Features and Benefits of Hydrocyclones
The hydrocyclones produced by DC Machinery (professional manufacturer of solids control equipment)have the following Features and Benefits.
1 Lightweight, durable, polymeric material construction. High temperature tolerance, chemical and erosion resistance and low-cost replacement.
2 Preferred flange connections: Tight, leak-proof operation.
3 Involute feed entry: Separates solids more efficiently than conventional tangential entry, thus conserving fluid and reducing wear at the feed inlet.
4 Wear-resistant ceramic insert molded into the underflow (4-Inch desilter): Resists abrasion to a degree many times higher than the standard polymeric material, thus ensuring long-lasting life.
5 Skid-mounted installation with lifting eye welded to frame: Safe and easy handling.
6 Customized cone configuration specific to customer needs: Ensures proper configuration for application.
Why Use Vacuum Degasser in a Mud System?
An efficient degasser is essential to safe and productive drilling operations. Since gas is practically insoluble in water, it is relatively easy to detect and remove. By comparison, gas is readily soluble in oilbase muds – its detection is more difficult as well as its removal. Regardless of the composition of the gas encountered, gas present mud can decrease efficiencies in rig pumps, centrifugal pumps and associated operational equipment. The goal is to “Keep the pumps Operating”.
Atmospheric vs. Vacuum Degassers
Atmospheric separations rely on impact, turbulence, agitation or a combination of these techniques to separate gas from the fluid. They possess few moving parts and have low initial cost. But their efficiency is limited and they may not be suitable for all conditions.
Vacuum degassers have more moving parts and higher initial cost. This is due primarily to the vacuum pump and attendant components. They are, however, much more efficient. Because gas volume is inversely proportional to pressure, gas bubbles surface from a fluid more rapidly under pressure. By combining impact and turbulence features with low pressure, modern vacuum degassers prove to be fast acting and highly effective in separating dissolved gasses.
SWACO 2-12 D-SANDER VERTICAL-MOUNT
Efficient, high-rate vertical-mounted D-SANDER
The 1,000-gpm (3,785-Lpm) M-I SWACO 2-12 D-SANDER removes 95 percent of the drilled solids to 74 microns and up to 50 percent to 40 microns. The 2-12 D-SANDER with Vertical Mount includes two 12-in (305-mm) diameter polyurethane hydroclones vertically-mounted on a heavy duty skid. Each hydroclone includes four replaceable wear resistant polyurethane sections that are joined together with quick release stainless steel clamps.
The D-SANDER includes an 8-in (203.2-mm) diameter feed manifold, a 10-in. (254-mm) diameter discharge manifold and a 0-60 psi (4.1-bar) pressure gauge. The D-SANDER also includes a solids discharge trough with a 6-in (152.4-mm) diameter solids discharge nipple and a 1-in. (25.4-mm) NPT wash line connection.
Features & Benefits
1 Efficient – The 2-12 D-SANDER removes 95 percent of the drilled solids to 74 microns and up to 50 percent to 40 microns.
2 High Processing Rate – Processing capacities of 1,000 gpm with the 12-inch dual cone.
3 Configured to Customer Needs – The 2-12 D-SANDER is available in space-saving vertical-mount skids and slant-mount skids.
4 Field-Proven Cone Design – Field proven in years of oilfield operation, each hydroclone assembly includes four replaceable wear resistant polyurethane sections joined together with quick-release stainless steel clamps. Worn sections can be replaced quickly and easily.
5 Extends Equipment Life – The 2-12 D-SANDER helps minimize maintenance, repair and replacement of downstream equipment. Field test data confirms D-SANDERs increased customer’s mud pump fluid end part life by 300 to 400 percent and minimized downtime overall.
6 Reduces Operating Cost – Based on actual comparative field tests, operators using D-SANDERs found they could increase bit life by 20 percent and reduce overall drilling time by 23 percent.
7 Rugged – The 2-12 D-SANDER is reliable and built rugged to provide long in-service life.
MONGOOSE PT Shale Shaker
Adaptable dual-motion shale shaker
M-I SWACO groundbreaking MONGOOSE PT shale shaker is the only such unit capable of adjusting on-the-fly as solids characteristics change. MONGOOSE PT gives you the unprecedented ability to change the shaker motion as the characteristics and volume of the cuttings change. The MONGOOSE PT can go from linear to elliptical motion with the simple flip of a switch.
The MONGOOSE PT shaker allows you to use linear motion while drilling top-hole sections where heavy, high-volume solids usually are encountered. These intervals require shakers to generate high G-forces to effectively move dense solids across the screens. As the drilling volume and solids characteristics, the MONGOOSE PT can be changed to the gentler elliptical mode, reducing the G-forces. This, in turn, extends screen life, while delivering drier solids, increasing fluid recovery and overall reduced operating costs.
The MONGOOSE PT shaker replaces the typical flow line trap or possum belly with an innovative distribution box. The unique design of the box redirects flow evenly across the entire width of the screen, increasing fluid handling capacity. It also dampens the velocity of the fluid in the flow line for more effective solids separation. The MONGOOSE PT is built to accommodate pre-tensioned screens.
Features and Benefits
1 Dual Motion – Linear motion for fast conveyance and heavy loading plus balanced elliptical motion for maximum retention time and drier cuttings
2Dual-Motion Control Box allows changes in shaker motion at the flip of a switch – without stopping the shaker
3Balanced basket functions flawlessly in either linear or balanced elliptical mode with dry, light loads or heavy loads
4Reinforced basket extends screen life by ensuring uniform movement across the screen; reduces bed fatigue and risk of premature failure
5Unique distribution box replaces flow-line possum belly, providing increased handling capacity and dampening the velocity of fluid from the flow line
China DC Solid control 10” Hydrocyclone
DC Solid control’s 10” polyurethane hydrocyclones offer operators a high volume 500 GPM cone where feed is tangentially blended into the cone entry as a narrow rectangle. This design minimizes turbulence in the upper section of the cone, allowing the solids to move quickly to the cone wall.
The cone is divided into three easy to replace or service sections which are held together by non-corrosive stainless steel clamps. The joints between each section are metal reinforced. The victaulic grooved connections for the feed and overflow are steel reinforced and the vortex finder is steel lined. Ceramic lower sections are available for longer life. The apex is available in 1.0, 1.375, and 1.5 inch sizes.
DC Solid control desanders make separations between 40 and 100 microns, and offer the flexibility of mounting either one, two, or three 10″ desander cones over a cone underflow pan. Each 10″ hydrocyclone processes 500 GPM at 75 feet of head, allowing for a maximum capacity of 1,500 GPM. The underflow can be discarded or directed onto a vibrating screen for further processing.
DC Solid control desanders are available in vertical or inclined manifold stand-alone models, or for inclined mounting on our shakers.
Horizontal drilling Methodology
Horizontal drilling is the process of drilling a well from the surface to a subsurface location just above the target oil or gas reservoir called the “kickoff point”, then deviating the well bore from the vertical plane around a curve to intersect the reservoir at the “entry point” with a near-horizontal inclination, and remaining within the reservoir until the desired bottom hole location is reached.
The initial vertical portion of a horizontal well, unless very short, is typically drilled using the same rotary drilling technique that is used to drill most vertical wells, wherein the entire drill string is rotated at the surface. The drill string consists of many joints of steel alloy drill pipe, drill collars, and the drill bit itself.
From the kickoff point to the entry point the curved section of a horizontal well is drilled using a hydraulic motor mounted directly above the bit and powered by the drilling fluid.
The drill bit can be rotated by the hydraulic motor without rotating the drill pipe from the motor to the surface. Steering of the hole is accomplished through the employment of a slightly bent or “steerable” downhole motor. By orienting the bend in the motor and drilling forward without rotating the pipe, known as slide drilling, the hole can be steered around a curve from horizontal to vertical and/or to the left or right. The curved section typically has a radius of 300-500 feet. To return to drilling straight ahead, the pipe is rotated slowly while the downhole motor also continues to rotate the bit.
Solids control system for Horizontal Directional Drilling
Horizontal Directional Drilling (HDD) is a trenchless excavation method originated in the late 1960’s by merging technologies prominent in the water wells and utilities industry. HDD involves drilling along a desired pathway while simultaneously inserting a pipe into the new borehole.
The HDD process is completed in three parts, the first being the drilling of a pilot hole along the proposed centreline and the second being the enlarging of the hole with a reamer. The last step would be have the new pipe installed behind the reamer during the last pass of the reaming process.
In any HDD works, a major component of the drilling activities is the drilling fluid. The use of drilling fluid helps to prevent the potential collapse of the bore path, assists in the removal of cutting material produced by the drilling process, and reduces friction during the pullback of the new pipe process.
In general, we use solids control equipments to process drilling fluid, and reuse drilling fluid for reducing the cost of drilling.
At present, the solids control system is including the drilling pumps, pipelines, mud tanks, drilling fluid trough, shale shaker, desander, desilter, centrifuge, degasser, mud mixer, etc.
Solids control system is according to the principle of screening and centrifuge to process drilling fluid with different density and particle size. According to the need to trade-off, and get the drilling fluid with the best performance. The advantages of this method are good effect, low cost, thus it has already used widely.
The structure of linear motion shale shaker
At present, in the drilling fluid processing industry, people use the linear motion shale shaker basically. The following is the structure combination of linear motion shale shaker.
1 Screen box dip angle adjustment:
Screw rod lifting adjustment;
Hydraulic pressure adjustment. (manual operation or motor-driven)
2 Vibration motor type:
Macroaxis vibration motor from Martin;
Minor axis vibration motor from Martin;
Domestic motor.
3 Shaker screen tensioning manner:
Quick-changing tension manner;
Tension bolt.
4 Shaker screen type (customized):
Hookstrip Flat Screen;
Pyramid Screen.
5 Screen box combine type:
Single shale shaker;
Duplex shale shaker;
Multi shale shaker.
6 The number of plies of screen:
Monolayer screen;
Double-deck screen.