Liquid Casing® forms a resilient material at the surface of the formation, creating an elastic surface plug that strengthens and seals the wellbore. The material is elastic, flexible, creating a seal through its re-seating nature — it doesn’t just bridge; it flexes and re-seals under pressure cycles.
Liquid Casing® enhaces sealing and plugging functions through the concept of Wedging Compressibility of micro-fractures, lost‐circulation prevention, and wall-cake permeability reduction. Our products were among the first to explore the impact of polymers on the wellbore filter cake and have superior NIF, Wellbore Stabilizing, and Wellbore Strengthening qualities. As reselient material, we are a precursor to what the industry later developed into Wellbore Strenthening Materials (WSMs).
Unlike traditional LCMs, which are designed to merely bridge a formation, our particles perform even when breached. This is because of their ability to quickly recombine in real time under challenging differential pressures, form a tight surface seal, and redistribute stress nesr the wellbore as resilient particles.
Our particles do not lose their seal completely when breached, acting as a type of Liquid Casing® that continuously stabilizes the formation while drilling.
A Product Line with a Performance History of Preventing and Curing Losses while Protecting the Wellbore from Harm
Since the early 1990s, Liquid Casing Inc. has served the oil and gas industry with its proprietary product line of drilling additives designed to apply the concept of “wedging compressibility of particles” to effectively seal micro-fractures and porous formations. With more than three decades of experience in the field, we understand the many challenges when drilling an oil or gas well and offer environmentally friendly advanced additives that prevent and stop losses while protecting the wellbore from the damaging effects associated with fluid invasion and the invasion of solids.
Liquid Casing Inc. products are used to effectively drill through otherwise troublesome shale sections without damaging the formation. When drilling through these troublesome sections, it is common that inhibition is reduced through the incorporation of suitable shale inhibitors. By using proper inhibitive mud systems, the pressure can be managed by adopting a suitable mud weight.
However, the drilling process results in micro-fractures and voids in the shale. This is due to the pore throats of different shapes and sizes in the shale lattice, which results in predominantly fractured shale. These cracks must be properly reinforced to seal the pores and stabilize the shale; otherwise, sloughing shale will result.
Through its unique characteristic of “wedging” micro-fractures and porous formations, Liquid Casing protects the formation from invasion of the drilling fluid by creating a seal that can adjust to varying increases and drops in pressure without being breached and without damaging the formation.
Through its proprietary method of creating compressibility through the characteristic of “wedging”, Liquid Casing Inc. products are specially engineered to mechanically plug the pore throats at the surface of the formation while protecting the wellbore from damaging invasion of fluid and solids. In this manner, Liquid Casing Inc. additives has developed a proven track record worldwide for ensuring unobstructed flow in the pay zone.
Liquid Casing Inc. is a polycrystalline material with various particle shapes and sizes which ensures superior performance by inhibiting invasion of the drilling fluid into the formation and thereby protecting the wellbore from damage.
The name Liquid Casing was designed to communicate the principal of “wedging compressibility” by describing the product as a “casing” that forms a hardened seal under pressure, but also is compressible enough that it is able to form a surface plug that bends like liquid. This combination of a hard surface plug that can also compress under treasure without breaching describes the “wedging” phenomenon, whereby particles are packed into the surface of the micro-fractures with increasing differential pressures to form an effective, rubber-like cork seal that shields the formation from fluid invasion.
Through our many success stories and superior performance, we have elevated the concept of noninvasive or minimally invasive drilling additives in the industry. Our additives prevent and stop losses while protecting the wellbore and reservoir from incurring damage during drilling operations.
When used in the system, Liquid Casing is found in both the external and internal filter cake. Due to its lightweight characteristics and bulk density of 0.70-0.74, the internal filter cake can be as high as 1-2 inches deep in the formation. With this quality and method of activation, the product acts as a rubber-like cork, which seals the pores.
When sufficient drawdown is given while bringing the well to production, the material will come out of the wellbore and can be removed during initial cleanup. As a result, our products are reservoir friendly and degrade slowly with the bacteria present in the down-hole due to its biodegradability.
By creating a superior surface plug and seal through its unique application of compressibility of particles, Liquid Casing® tackles a wide array of problems typically encountered when drilling a well. For example, formations drilled with Liquid Casing® will have various pore throats ranging from micro, small, medium and large.
Liquid Casing® is designed to properly seal a wide range of pore throat sizes when pre-circulated and used in the system during drilling, in addition to mitigating the invasion of fluids and solids. The result is record-breaking drilling time, smooth trips, reduced drag and torque, and the ability to pump through drilling MWD tools, all without damage to the formation.
These impacts ensure that our products are reservoir friendly, protecting the producing zone to ensure maximum production.
