Underreamers

Rock Type Underreamer

 

Stuckey’s Specialty Tools’ rock type underreamers are used to enlarge sections of the hole below the surface. Stuckey's underreamer is a rugged hydraulically actuated tool used to provide clearance for running casing, obtaining suitable annular space for cementing, enlarging sections for gravel packing, or for other downhole operations during drilling or production procedures. Since the rugged design of the tool allows for larger cones and bearings to be used, more penetration can be obtained. Medium hard formation cones are standard, but other cones are available from hard to soft formation. A position stop assures true gauge diameter. Flow through the tool is regulated by a tungsten carbide orifice. By using this orifice, a wide selection of sizes are available that will meet any mud pump requirements.



S P E C I F I C A T I O N S


TOOL O.D.           OPERATING RG.              PIN CONN.            WT./LB.
3-3/4"                   4-1/2" - 6-1/4"                   2-3/8" REG.           150
4-1/2"                   4-3/4" - 9"                           2-7/8" REG.           200
5-3/4"                   6-1/2" - 13"                        3-1/2" REG.           360
8-1/4"                   11-1/2" - 17"                      6-5/8" REG.           810
9-1/2"                   13" - 18"                              6-5/8" REG.          1175
11-3/4"                 14-3/4" - 22"                      6-5/8" REG.          1725
14-3/4"                 17-1/2" - 30"                      6-5/8" REG.           2600

Drag Type Underreamer

 

Stuckey’s Specialty Tools’ drag type underreamers are used in poorly consolidated soft to medium formations where large diameter intervals are required for gravel packing or cementing. It is also an effective tool for bell hole operations in fault zones. Pilot holes can be enlarged up to three times the body diameter in a single trip. These tools can be operated with water, mud, air, aerated mud, or any other circulating fluid. Low cost cutter arms are field replaceable and are dressed with tungsten carbide for good cutting action.

 

S P E C I F I C A T I O N S
 

TOOL SERIES       STD OPENING        BODY DIA   PIN CONN.       WT./LB.
3600                       9"                              3-5/8"           2-3/8"                185
4700                       12"                            4-3/4"           2-7/8"                230
5700                       16"                            5-3/4"           3-1/2"                350
7200                       22"                            7-1/4"           4-1/2"                750
9500                       28"                            9-1/2"           6-5/8"                1100
11000                    36"                            11-3/4"         6-5/8"                1400

Drilling Type Underreamer

 

A Drilling Drag type underreamer is available. It will accommodate a standard rock bit to drill and underream simultaneously, and with a jet sub on bottom. This allows for good hole cleaning and bottom hole stabilization, as well as being able to wash the cutter arms.

S P E C I F I C A T I O N S


TOOL SERIES     STD OPENING    BODY DIA.      PIN CONN.       WT./LB.
4700                    12"                         4-3/4"              2-7/8"                 230
5700                    16"                         5-3/4"              3-1/2"                 350
7200                     22"                        7-1/4"              4-1/2"                 750
9500                     28"                        9-1/2"              6-5/8"                 1100
11000                  36"                         11"                   6-5/8"                 1400

Tubing Underreamer

 

The tubing underreamer - clean out tool and cutter is a uniquely designed tool which will operate underneath production packers without removing or pulling the packer. Scale, cement, corrosion, or formation debris that may have formed beneath the packer can easily be removed. By dislodging this unwanted foreign material from the well bore beneath the production packer, production of the well will increase without removing the packer from the well bore. The tool can also be dressed with tungsten carbide to cut tubing.

The tubing underreamer - clean out tool and cutter is hydraulically operated with a minimum of 75 psi pressure. All tools are designed with positive stops which allow the cutter arms to expand only to a predetermined diameter. The cutter arms are dressed with various size and chips of tungsten carbide for maximum penetration and material removal. A blade type bit or bullnose is also dressed with tungsten carbide.

The tubing underreamer - clean out tool and cutter are available in sizes that can be operated 1.900" through 3-1/2" tubing. The maximum operating range of each tool is listed below. The tubing underreamer - clean out tool and cutter can also be furnished for h2s service.

S P E C I F I C A T I O N S

TUBING SIZE                               TOOL O.D.                          (MAXIMUM)
1.900"                                           1.600"                                 TUBING CUTTER
2-3/8"                                            1-7/8"                                   4-1/2" CSG. I.D.
2-7/8"                                            2-3/8"                                   5-1/2" CSG. I.D.
3-1/2"                                            3"                                           7" CSG. I.D.