Abstract: A system for improving production of crude oil from an underground reservoir by the injection of treatment fluids includes a well casing, a production tube located within said well casing and defining therewith an annular space for receiving treatment fluids, a packer located within said annular space for isolating said annular space from a reservoir, a pump disposed in said production tube and having an inlet valve for receiving fluids to be pumped and a mixing shoe for mixing treatment fluids from said annular space with crude oil from said reservoir so as to form a substantially homogeneous mixture of said oil and said fluids in said production tube below said inlet valve of said pump.

Abstract: A method for conditioning a gas containing entrained asphaltene-containing hydrocarbons for pipeline transportation, having the steps of providing a stream of gas containing entrained asphaltene-containing hydrocarbons; and applying a surface active compound to the stream of gas, the surface active compound being a mixture of demulsifying agent, antifoaming agent, dispersant, aromatic solvent and alcohol solvent, whereby formation of emulsion from asphaltene containing hydrocarbons is prevented. The surface active compound has the following composition by volume: 5-15% demulsifying agent; 1-3% antifoaming agent; 10-40% dispersant; 10-60% aromatic solvent; and 20-60% alcohol solvent.

Abstract: A process is disclosed for manufacturing solid fuel which includes the steps of mixing a biomass, a heavy hydrocarbon and a sorbent to form a hydrocarbon-biomass slurry, the biomass being characterized by a particle size and distribution of about 50% between about 250-2000 .mu.m and about 50% less than about 250 .mu.m, and more preferably as follows:______________________________________ distribution particle size ______________________________________ 10-20% 1250-2000 .mu.m 10-20% 500-1250 .mu.m 10-20% 250-500 .mu.m balance .ltoreq.250 .mu.m ______________________________________compacting the slurry to form a solid fuel agglomerate; and baking the agglomerate so as to form a solid fuel briquette having a resistance to compression of at least about 22 kg/cm.sup.2. The mixing step includes the step of mixing the biomass, hydrocarbon and sorbent in the following proportions, by weight: ______________________________________ biomass 50-70%; hydrocarbon 30-45%; and sorbent 5-10%.

Abstract: A method for conditioning a gas containing entrained asphaltene-containing hydrocarbons for pipeline transportation, having the steps of providing a stream of gas containing entrained asphaltene-containing hydrocarbons; and applying a surface active compound to the stream of gas, the surface active compound being a mixture of demulsifying agent, antifoaming agent, dispersant, aromatic solvent and alcohol solvent, whereby formation of emulsion from asphaltene containing hydrocarbons is prevented. The surface active compound has the following composition by volume: 5-15% demulsifying agent; 1-3% antifoaming agent; 10-40% dispersant; 10-60% aromatic solvent; and 20-60% alcohol solvent.

Abstract: A reciprocable polished rod projects through a housing and a stuffing box downstream of the housing. A plurality of packings are provided in the upper portion of the housing and contacting the rod preventing fluid leakage from the housing. A retainer holds the packings in place and adjustable pressure is exerted on the retainer and on the packings.

Abstract: A process is disclosed for manufacturing solid fuel which includes the steps of mixing a biomass, a heavy hydrocarbon and a sorbent to form a hydrocarbon-biomass slurry, the biomass being characterized by a particle size and distribution of about 50% between about 250-2000 .mu.m and about 50% less than about 250 .mu.m, and more preferably as follows:______________________________________ distribution particle size ______________________________________ 10-20% 1250-2000 .mu.m 10-20% 500-1250 .mu.m 10-20% 250-500 .mu.m balance .ltoreq.250 .mu.m ______________________________________compacting the slurry to form a solid fuel agglomerate; and baking the agglomerate so as to form a solid fuel briquette having a resistance to compression of at least about 22 kg/cm.sup.2. The mixing step includes the step of mixing the biomass, hydrocarbon and sorbent in the following proportions, by weight: ______________________________________ biomass 50-70%; hydrocarbon 30-45%; and sorbent 5-10%.

Abstract: A down-hole separator for a production well drilled in a producing formation has a first tube having a first end and a second end, the first end being adapted for connection to an end of a production tubing of the production well, an outer annular space being defined between the first tube and a casing string of the production well; a second tube, having a smaller diameter then the first tube, and being disposed within the first tube, an inner annular space being defined between the second tube and the first tube, the second tube having an inlet end and an outlet end, the outlet end being turned at an angle relative to a longitudinal axis of the second tube and communicating with the outer annular space, the inlet end passing sealingly through the second end of the first tube to communicate with the producing formation, the first tube having perforations at a point below the outlet end of the second tube to allow communication between the outer annular space and the inner annular space.