Abstract: Injection of a drilling fluid additive into a drilling fluid, as the drilling fluid is being pumped into a bore hole, in direct proportion to the amount of drilling fluid being pumped.

Abstract: An antifreeze gel composition is provided which is particularly useful in preventing ice formation and in dissolving ice already formed in a cable conduit line. The composition includes a water soluble antifreeze agent such as an alkylene glycol, a thickening agent, and water. A two-part chemical duct block kit for use in a cable conduit is also provided which includes the above antifreeze gel composition containing additional alkylene glycol in a first container, and a solid absorbing agent powder for aqueous liquids in a second container. When the powder is added to the antifreeze composition, a solid composition is formed which can block liquids and gels from passing through a conduit.

Abstract: An aqueous based loosener composition is provided which is particularly useful in removing cable from a conduit. The composition comprises an effective amount of a lubricating agent such as a fatty acid salt compound, an effective amount of a solvating agent such as a nonpolar hydrocarbon compound, and a major proportion of water. A method for removing cable from a conduit using the aqueous based composition is also provided.

Abstract: An improved aqueous gel lubricant comprising water and about 0.5 to 25 wt-% of at least one 200 to 8,000 molecular weight polyalkylene glycol such as polyethylene glycol and polypropylene glycol. Preferably, the lubricant further comprises about 0.01 to 10 wt-% viscosity modifier such as a water soluble resin, natural gum, or cellulosic compound. The lubricant may further contain an effective antioxidizing, preserving, solvating, suspending and freezing point depressing amount of a hydroxy compound.

Abstract: A cable lubricating device (1) including a split housing (2). Lubricant (25) is introduced into the housing through a vertically oriented orifice (6), the cable (37) advancing in a generally horizontal direction. A coupling adaptor (59) permits withdrawl of lubricant by a standard fitting (64) without danger of the collapse of hose (56) even at high lubricant discharge pressures. A series of sponges (18, 19) apply lubricant to the cable in a metered fashion. A method is also disclosed wherein lubricant may be "preloaded" into conduit (26) to enhance uniform lubricant distribution.

Abstract: A substantially neutral aqueous lubricant comprising a major portion of water, a polyelectrolyte acrylate compound, a fatty acid compound, a polyacrylamide compound and a C.sub.1-6 alcohol, methods to make the lubricant and methods of its use.

Abstract: An improved method and apparatus for proportionately metering and selectively applying lubricant to the inner surface of a conduit as a function of the conduit curvature, to facilitate subsequent pulling of cables therethrough, is disclosed. A spreading device, when pulled through "straight" conduit sections, meters and applies lubricant in longitudinally extending spaced strips of uniform thickness around the inner circumference of the conduit. Upon approaching a curvature or bend in the conduit, pulling tension force vectors transmitted to the spreading device in the radial direction tilt the spreading device to non-concentric alignment in the conduit, causing the spreader to disproportionately apply increased quantities of lubricant to that surface of the conduit having a shorter bend radius, where such lubricant is most needed to reduce frictional sidewall forces applied to the pulled cables.

Abstract: A substantially neutral aqueous lubricant comprising a major portion of water, a polyelectrolyte acrylate compound, a fatty acid compound, a polyalkyleneoxide compound and a C.sub.1-6 alcohol, methods to make the lubricant and methods of its use.