Abstract: A drill pipe comprises a drill pipe body having a drill pipe body outer diameter and a drill pipe body inner diameter, wherein the drill pipe body outer diameter is from about 5.1-inches to about 5.4-inches and the drill pipe body inner diameter is from about 4.4-inches to about 4.6-inches; and a tool joint comprising a rotary shoulder box connection; wherein the drill pipe has an optimization ratio and wherein the optimization ratio is at least about 0.68 for a production hole from about 7?-inches to about 12¼-inches. Methods of using the drill pipe are also disclosed.

Abstract: A drill pipe comprises a drill pipe body and a tool joint that comprises a rotary shoulder connection is disclosed. The rotary shoulder connection comprises: a box connection, wherein the box connection has a box outer radius, a box counter bore radius and a box inner radius, and box threads having a box thread form cut along a box taper; a pin connection, wherein the pin connection has a pin outer radius, a pin cylinder radius and a pin nose radius, and pin threads having a pin thread form cut along a pin taper to align with the box threads inside the box connection; and a primary shoulder connection comprising: a primary box shoulder that is angled or curved; and a primary pin shoulder that is angled or curved. Methods of using the drill pipe are also disclosed.

Abstract: A piston-style drilling mud screen system, comprising: a first assembly having a first drilling mud inlet and outlet, a first body having a second drilling mud inlet and outlet, wherein the first drilling mud outlet of the first assembly is fluidly connected to the second drilling mud inlet of the first body, a second body having a third drilling mud inlet and outlet, wherein the second drilling mud outlet of the first body is fluidly connected to the third drilling mud inlet of the second body, a drilling mud screen, disposed within the first body and the second body between the first drilling mud inlet and the second drilling mud outlet, a union system, comprising: a third body having a first inlet and outlet, a fourth body having a second inlet and outlet; and a fifth body, wherein a second end of the first body is disposed through a first end of the fifth body, wherein the first end of the second body is disposed through a second end of the fifth body, a second assembly having a fourth drilling mud inlet

Abstract: A drilling mud screen system, comprising: a first assembly having a first drilling mud inlet and outlet, a first body having a second drilling mud inlet and outlet, wherein the first drilling mud outlet of the first assembly is fluidly connected to the second drilling mud inlet of the first body, a second body having a third drilling mud inlet and outlet, wherein the second drilling mud outlet of the first body is fluidly connected to the third drilling mud inlet of the second body, a drilling mud screen, disposed within the first body and the second body between the first drilling mud inlet and the second drilling mud outlet, a lock system, comprising: a third body having a first inlet and outlet, wherein the first body is disposed through the third body such that the first body is held by a lip at the first end of the third body, a fourth body having a second inlet and outlet, wherein the first outlet of the third body is connected to the second inlet of the fourth body, wherein the second body is disposed

Abstract: A rotary shoulder connection comprising: a box connection, wherein the box connection has a box outer radius, a box counter bore radius and a box inner radius, and box threads having a box thread form cut along a box taper; a pin connection, wherein the pin connection has a pin outer radius, a pin cylinder radius and a pin nose radius, and pin threads having a pin thread form cut along a pin taper to align with the box threads inside the box connection; and a primary shoulder connection comprising: a primary box shoulder at a primary box angle from greater than about 0 to about 15 degrees with respect to a first perpendicular to a box axis at a first end point; a primary pin shoulder at a primary pin angle from about 0 to about 15 degrees with respect to the first perpendicular to a pin axis at the first end point is disclosed. Methods of using the rotary shoulder connection are also disclosed.

Abstract: A rotary shoulder connection comprising: a box connection, wherein the box connection has a box outer radius, a box counter bore radius and a box inner radius, and box threads having a box thread form cut along a box taper; a pin connection, wherein the pin connection has a pin nose inner radius, a pin outer radius, a pin cylinder radius and a pin nose radius, and pin threads having a pin thread form cut along a pin taper to align with the box threads inside the box connection; and a primary shoulder connection comprising: a curved primary box shoulder; a curved primary pin shoulder and/or a curved secondary box shoulder and a curved secondary pin shoulder is disclosed. Methods of using the rotary shoulder connection are also disclosed.

Abstract: A drilling mud screen system, comprising: a hollow body having a first end, a second end and a first centerline from the first end to the second end; a drilling mud inlet having a second centerline forming an angle with the first centerline and extending to the first centerline, wherein the drilling mud inlet is offset from the first end of the body; a drilling mud outlet at the second end of the body; a drilling mud screen access port at the first end of the body; an end cap, disposed within the drilling mud access port to close and seal the drilling mud access port; a plug, disposed within the first body between the first end cap and the first drilling mud inlet; and a drilling mud screen, disposed within the body between the drilling mud inlet and the drilling mud outlet is disclosed. Methods of installing and using the drilling mud screen system are also disclosed.