英文版《堵漏手册》——雪铁龙公司

SUSTAINABLE VS UNSUSTAINABLE
The following products are made from sustainable grown materials and do not result in the destruction of forests. TORQUE-SEAL™ LCM/LPM SURE-SEAL™ LPM WELL-SEAL™ LCM F, M, C DynaRed™ Fiber F, M, C DynaRed™ Plus Fiber F, M
and displays high resiliency levels under down hole conditions. When added to a drilling fluid, Rebound™ LCM becomes tightly compressed into porous formations and fractures, and will expand and contract without being dislodged due to changes in differential pressure. (Pages 74 – 79)
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TORQUE-SEAL™ LCM/LPM PRODUCT BULLETIN INTRODUCTION
Lost circulation is the most costly mud related drilling problem, and induced fracture lost circulation is probably the most common type faced by the oil and gas industry. Wellbores break down and induced fracture lost circulation occurs when the hydraulic pressure in the wellbore exceeds the breakdown pressure of the weakest formation exposed.
DynaRed™ Plus Fiber Fine and Medium grades, first introduced in 2009, are
designed to provide a fine micro-cellulosic fiber that will pass through a 230 mesh screen and a medium grade that will complement the fine to give a transition of sized particles to efficiently and effectively stop seepage loss. (Pages 31 – 40)
Diaseal® M LCM, first introduced in 1964, was designed to seal fractures after
they were induced or encountered and standard LCM’s such as cedar fiber had been tried but failed. Effective over a wide range of mud densities this material makes a pill that may be custom designed to fit the loss of return problems on your well. Diaseal® M LCM is always placed with a hesitation squeeze technique. (Pages 54 – 73)
Rebound™ LCM Regular & Fine, first introduced in 2005, is a carbon-based
material used to prevent lost circulation in porous and fractured formations. Rebound™ LCM may be used in any drilling fluid, including water-based, diesel, mineral and synthetic oil based drilling fluids. Rebound™ LCM has unique performance characteristics due to its manufacture with dual composition carbon, 2
PRODUCT DESCRIPTION
TORQUE-SEAL™ LCM/LPM is a new loss prevention material (LPM) for use with casing drilling operations. Specially formulated this product has a broad range of particles which cover a wide range of loss zone openings. TORQUE-SEAL™ LCM/LPM contains particles in the right size range to achieve both loss prevention with wellbore strengthening and more traditional loss circulation problems. This makes TORQUE-SEAL™ LCM/LPM multifunctional. TORQUE-SEAL™ LCM/LPM first stabilizes the borehole by plugging minute surface flaws and gravel–size pores. If fractures begin to develop, TORQUE-SEAL™ LCM/LPM acts as a fracture propagation inhibitor by screening out at the fracture tip. The low density of TORQUE-SEAL™ LCM/LPM, with a specific gravity between 1.2 – 1.4 means it can be recovered and recycled and still allow drill solids to be discarded using solids control equipment. This low density allows TORQUE-SEAL™ LCM/LPM to be added at lower mud weights than other heavier materials for unweighted drilling fluids. TORQUESEAL™ LCM/LPM has a minimal impact on fluid density or rheology even at concentrations of 50 ppb and can be used in either water–based or oil–based systems. TORQUE-SEAL™ LCM/LPM also acts as a torque reducer because it is composed of spherical materials that are hard and act as ball bearings. TORQUESEAL™ LCM/LPM has been used in Alaska and the Piceance basin with good success.
ENGINEERED VS YARD CLIPLCM/LPM, introduced in 2008, is designed for casing drilling
as a torque reducer and both a loss prevention material (LPM) and a loss circulation material (LCM). With a broad particle size range this product both reduces torque and drag and seals fractures before they have a chance to propagate beyond repair. Case histories in the Rockies and Alaska show this unique material reduces torque by 20% at concentrations of as little as 2ppb. (Pages 4 – 10)
DynaRed™ Fiber Fine, Medium and Coarse grades, first introduced in 1994, are
designed to provide a seepage loss material that would in the fine and medium grades largely pass through fine shale shaker screens and not be screened out and sent to the reserve pit. This makes this product very efficient and cost effective. (Pages 41 – 53)
WELL-SEAL™ LCM Fine, Medium and Coarse grades, introduced in 2009 are
designed for use after loss of returns has occurred. WELL-SEAL™ LCM is a one sack formula designed to reduce the cost of stocking a variety of LCM’s at the rig location or maintained at a stock point. This product may be used to pretreat known or suspected loss of circulation zones but may require the by passing of the shale shakers in order to keep it in the system. Pills of 50-100 ppb of the coarse grade material may be spotted at a total loss of return zone but require the drill pipe be open ended. (Pages 20 – 30)
THE ENGINEERED LOST CIRCULATION MATERIALS OF DRILLING SPECIALTIES COMPANY OVERVIEW
Over the last 63 plus years Drilling Specialties Company has introduced a variety of unique LCM’s (lost circulation materials) designed to meet specific needs of the drilling industry. Now a big part of our business these products address short falls in the drilling fluids industries line up of materials used to remedy or prevent lost circulation.
SURE-SEAL™ LPM, introduced in 2008, is designed as a (LPM) to prevent
fractures from forming in the borehole by sealing them before they have a chance to propagate. With a defined particle size this material is an effective low cost replacement for materials such as carbonized graphite. (Pages 11 – 19)