Abstract: A well tractor for use in inserting a bottom hole assembly into a wellbore, the well tractor including a tractor body, and two or more wheels connected to the tractor body by pivot arms and having a retracted position and a deployed position, the at least two wheels moveable between the retracted and deployed positions by hydraulic cylinders attached to the pivot arms. The well tractor further includes a track creating a loop around at least two wheels and engaged with the wheels, so that when the wheels rotate, the track also rotates around the wheels. When the wheels are in the retracted position, the track is maintained in close proximity to the tractor body, and when the wheels are in the deployed position, the track extends radially away from the tractor body and into contact with surfaces of the wellbore.

Abstract: A method of using an electrochemical gas lift apparatus to induce artificial gas lift in a production fluid includes introducing the electrochemical gas lift apparatus into a well bore having a production zone, operating the electrochemical gas lift apparatus such that a combination of hydrocarbon fluid and formation water is introduced into the interior of the electrochemical gas lift apparatus, introducing electrical power to the electrochemical gas lift apparatus such that at least a portion of formation water in the interior of the electrochemical gas lift apparatus converts into product gases, operating the electrochemical gas lift apparatus such that the product gases form product gas bubbles in the interior of the electrochemical gas lift apparatus, and operating the electrochemical gas lift apparatus such that production fluid forms in the interior of the electrochemical gas lift apparatus. The production fluid comprises hydrocarbon fluid, unconverted formation water and product gas bubbles.

Abstract: A method of using a slurry-like fracturing fluid for hydraulic fracturing in an unconventional reservoir: injecting the slurry-like fracturing fluid into the unconventional reservoir, the slurry-like fracturing fluid comprises a particulate portion and a slurry water, the particulate portion comprises a solid acid component, injecting the slurry-like fracturing fluid is operable to generate a network of fractures, the slurry-like fracturing fluid is operable to reduce a reservoir temperature from a resting reservoir temperature, permitting the slurry-like fracturing fluid to cure into a permeable bed, allowing the reservoir temperature to return to the resting reservoir temperature to trigger the hydrolysis of the solid acid, hydrolyzing the solid acid to produce a liquid acid, and stimulating the network of fractures with the liquid acid to increase permeability of the permeable bed in the network of fractures in the unconventional reservoir, the increased permeability operable to create a sweet spot.

Abstract: Provided is a method and composition for the in-situ generation of synthetic sweet spots in tight-gas formations. The composition can include gas generating compounds, which upon activation, exothermically react to generate heat and gas. The method of using the composition includes injecting the composition into a tight-gas formation such that upon activation, the heat and gas are generated, resulting in the formation of fractures and microfractures within the formation.

Abstract: A method of using a slurry-like fracturing fluid for hydraulic fracturing in an unconventional reservoir: injecting the slurry-like fracturing fluid into the unconventional reservoir, the slurry-like fracturing fluid comprises a particulate portion and a slurry water, the particulate portion comprises a solid acid component, injecting the slurry-like fracturing fluid is operable to generate a network of fractures, the slurry-like fracturing fluid is operable to reduce a reservoir temperature from a resting reservoir temperature, permitting the slurry-like fracturing fluid to cure into a permeable bed, allowing the reservoir temperature to return to the resting reservoir temperature to trigger the hydrolysis of the solid acid, hydrolyzing the solid acid to produce a liquid acid, and stimulating the network of fractures with the liquid acid to increase permeability of the permeable bed in the network of fractures in the unconventional reservoir, the increased permeability operable to create a sweet spot.

Abstract: A method of using an electrochemical gas lift apparatus to induce artificial gas lift in a production fluid includes introducing the electrochemical gas lift apparatus into a well bore having a production zone, operating the electrochemical gas lift apparatus such that a combination of hydrocarbon fluid and formation water is introduced into the interior of the electrochemical gas lift apparatus, introducing electrical power to the electrochemical gas lift apparatus such that at least a portion of formation water in the interior of the electrochemical gas lift apparatus converts into product gases, operating the electrochemical gas lift apparatus such that the product gases form product gas bubbles in the interior of the electrochemical gas lift apparatus, and operating the electrochemical gas lift apparatus such that production fluid forms in the interior of the electrochemical gas lift apparatus. The production fluid comprises hydrocarbon fluid, unconverted formation water and product gas bubbles.

Abstract: Embodiments of a method and apparatus for locating lateral wellbores extending from a main wellbore includes a caliper sensing tool having spring actuated calipers extending radially therefrom. Each of the calipers is connected to a sensor, such as a linear variable displacement sensor, that is used to calculate the radial extension distance of the respective caliper. When the tool is inserted through a wellbore and moves past a lateral wellbore opening, the calipers extend into the lateral wellbore opening. The extension, as well as contact with the surfaces of the lateral wellbore, are used to determine the wellbore depth location and azimuthal direction of the lateral wellbore. A deflectable steering arm is operable to be selectively steered into the lateral opening to facilitate access to the lateral wellbore for logging or intervention purposes.

Abstract: A well tractor for use in inserting a bottom hole assembly into a wellbore, the well tractor including a tractor body, and two or more wheels connected to the tractor body by pivot arms and having a retracted position and a deployed position, the at least two wheels moveable between the retracted and deployed positions by hydraulic cylinders attached to the pivot arms. The well tractor further includes a track creating a loop around at least two wheels and engaged with the wheels, so that when the wheels rotate, the track also rotates around the wheels, When the wheels are in the retracted position, the track is maintained in close proximity to the tractor body, and when the wheels are in the deployed position, the track extends radially away from the tractor body and into contact with surfaces of the wellbore.

Abstract: A vibrator tool for use in inserting a bottom hole assembly into a wellbore, the vibrator tool including a substantially cylindrical body, a motor within the substantially cylindrical body, a non-linear shaft attached to the motor so that the motor turns the non-linear shaft, the non-linear shaft extending outwardly from the motor within the substantially cylindrical body, and a bearing attached to the shaft a predetermined distance from the motor so that the bearing rotates as the non-linear shaft turns, the bearing contacting portions of the inner surface of the cylindrical body as the non-linear shaft turns, thereby vibrating the substantially cylindrical body.

Abstract: Embodiments of the present invention enables users to determine the efficiency of acid fracturing in stimulating a formation. The testing procedures of embodiments of the present invention examine the elastic, plastic, and creeping effects on closing an acidized fracture during the life span of an oil/gas well. If it is determined that an acidized fracture will be closed for a given stress and temperature, then proppant fracturing should be used; otherwise, acid fracturing is the stimulation treatment to consider. The testing results also provide an estimation of the lifetime of an acid fracture for a given set of in-situ conditions of stress and temperature. If the lifetime is determined to be too short to make the fracturing treatment economically feasible, a different stimulation method should be considered, such as proppant fracturing or matrix acidizing.