Halliburton Energy Services Inc. | Date: 2016-01-11
Well fluids and methods are provided that can be used for stabilizing a shale formation, especially during drilling of a well into or through a shale formation. The well fluids include: (i) a continuous water phase; (ii) a viscosity-increasing agent, wherein the viscosity-increasing agent comprises water-soluble hydrophilic polymer; (iii) a fluid loss control agent; and (iv) a cyclodextrin-based compound. The methods of drilling include the steps of: (A) introducing the well fluid into a zone of a subterranean formation; and (b) drilling the zone.
Halliburton Energy Services Inc. | Date: 2016-01-05
Degradable balls for downhole use may include an incompliant degradable polymer and a compliant filler material, the incompliant degradable polymer having an elastic modulus of about 2 GPa or greater, and the compliant filler material having an elastic modulus of less than about 2 GPa. Such degradable balls may be useful in sealing segments of a wellbore and actuating wellbore tools.
Halliburton Energy Services Inc. | Date: 2015-01-30
A gravel packing apparatus is provided, including first and second joints, each including a sand control screen assembly including a base pipe and a filter medium positioned exteriorly of the base pipe; and a slurry delivery subassembly positioned exteriorly of the sand control screen assembly, the slurry delivery subassembly including a ring assembly positioned around the base pipe; and a transport tube extending through the ring assembly and longitudinally along the sand control screen assembly; a jumper tube coupled to, and extending between, the transport tube of the first joint and the transport tube of the second joint; and a cage assembly extending circumferentially about respective portions of the first and second joints and positioned exteriorly of the jumper tube, the cage assembly comprising a plurality of cage sections that are each independently connected to the respective ring assemblies of the first and second joints. A method is also provided.
Halliburton Energy Services Inc. | Date: 2015-10-26
Polymer-based drilling fluids may be used as an alternative to drilling fluids containing bentonite or other clay materials, although filter cake formation can often be inadequate when using polymer-based drilling fluids. As a result, drilling methods employing polymer-based drilling fluids may sometimes experience unacceptable fluid loss performance within a borehole. Drilling methods with enhanced fluid loss performance may comprise: providing a drilling fluid comprising a carrier fluid, a viscosity-enhancing polymer, and a plurality of non-biodegradable particulates, the non-biodegradable particulates comprising at least silica particulates; drilling a borehole in the presence of the drilling fluid; and forming a filter cake within the borehole, the filter cake comprising the non-biodegradable particulates.
Halliburton Energy Services Inc. | Date: 2015-01-29
A sensing subassembly for use with a downhole tool comprises a housing, a cavity disposed within the housing, an electronic board disposed within the cavity, a stiffening member engaging the electronic board and configured to limit flexing of the electronic board, and a spring member configured to provide an isolation mount for the electronic board within the cavity.