Abstract: A laminate which is elastic in at least one direction, includes an elastic sheet having at least one nonelastic nonwoven web joined thereto at least at two areas. The nonelastic web is gathered between the two areas. The elastic sheet is formed from a polyetherester and the nonelastic nonwoven web includes spunlaced hydraulically entangled polyester fibers. The nonelastic nonwoven web may also include rayon or wood pulp fibers.

Abstract: An elastic laminate which includes a first elastic sheet having at least one other elastic sheet joined thereto. The first elastic sheet is formed from an ethylene vinyl acetate copolymer. The second elastic sheet is formed from a thermoplastic polyurethane elastomer. The sheets may be nonwoven webs of meltblown fibers.

Abstract: An elastomeric nonwoven web is formed by meltblowing fibers composed of a polyether block amide copolymer.

Abstract: A hydraulic control system for a downhole sidewall coring tool having first and second power hydraulic systems in which changes in pressure drop in a portion of the first hydraulic system adjusts a control valve to change the pressure in a part of the second hydraulic system. Means are provided to adjust the operation of the control valve as a function of viscosity change in the hydraulic fluid caused by change in ambient temperature.

Abstract: A hollow truncated cone made from material with elastic properties which expands around a core being cut from the sidewall of a borehole drilled in the earth with a core cutting means rigidly connected to a core barrel. The hollow truncated core is held in position inside the core barrel such that it does not rotate with the core cutting means during the cutting of a core.

Abstract: Disclosed is a method for removing phenols from an underground gasification zone by injecting an alkaline material to convert at least a portion of the phenols to the corresponding salt and producing the solution of said salt. Thereafter, the salt can be converted to the free phenol or merely evaporated to dryness. In both of these cases, the phenol or salt can be incinerated.

Abstract: Apparatus for forming a downwardly directed beam of acoustic wave energy in a body of water, comprising a source of acoustic wave energy such as a water gun, supported at a selected depth in the body of water. Means are provided above and around the source in the form of a series of concentric circular tubes of selected diameters and spacing so that the enveloping surface is a paraboloid. A large number of small perforations are spaced along these horizontal tubes through which compressed gas, which is supplied to the tubes, can escape and form spaced rising columns with small gas bubbles in the volume of water above the paraboloid. The highly reflecting contact surface between the water within the paraboloid and the gas-water mixture above the paraboloid causes downward reflection of seismic energy from the source in the form of plain waves of seismic energy.

Abstract: There is provided a composition which comprises (1) a predominantly C.sub.6 -C.sub.12 high-boiling mixture of ketones, ethers, alcohols, esters, and aldehydes and (2) a fatty acid ester, such as sorbitan monooleate. Optionally, it can contain also a polyglycol having an average molecular weight of 3,800 or higher.There is provided also a method for defoaming an aqueous fluid system and preventing the formation of foam in said system, which method comprises adding to said system an effective defoaming and antifoaming amount of the aforesaid composition.

Abstract: A technique for continuous gravity separation of a produced oil and water emulsion has particular utility in separating water for reinjection during a waterflood secondary recovery operation without loss of saleable oil. The method employs a flow direction means to introduce the produced oil-water emulsion into a large volume settling tank substantially tangential to the tank wall and then withdraws the separated oil and water. The apparatus of the instant invention comprises: (a) a tank, (b) an oil-water inlet means, (c) a flow direction means connected to the oil-water inlet means to direct the oil-water emulsion into the settling tank tangential to the tank wall, (d) a bottom-center located water outlet pipe, and (e) an oil outlet pipe.

Abstract: A moving seismic source system for the use in water-covered areas comprising a conventional source and streamer cable means with multiple receiver, and additionally includes between the source and receivers a volume of the body of water containing a small percentage of free gas to form a gas-water mixture. The volume of gas-water mixture is of select size and shape to form an interface with the gas-free water to form, for example, a paraboloid which acts to reflect and attenuate acoustic waves that impinge on the interface and so minimizes extraneous seismic noise.