Động lực học lan truyền sóng áp lực trong quá trình khoan xoay - đập

NGHIEN COU - TRAO D(!)l

DONG LU'C HOC LAN TRUYDN SONG AP LLFC

TRONG QUA TRJNH KHOAN XOAY - OAP

PGS.TS. Chu Vdn Dat, TS. Ll Trpng CKdng, ThS. LUu Minh Hiing

Hpc vi|n Ky thudt Qudn sp

T 6 M TAT

Npj" dung hdi bdo gidi thiiu md hinh khoan sit dung ndng lUdng ddp, md hinh ndy dUa tren md td

hUu han cdc phdn tit cua chodng khoan trong hi thdng thiit bi khoan, vi tri bi mat dd tiip xuc vdi cdc rdng

cdt cua mui khoan trong qud trinh khoan xoay ddp dUdc md td bdi qui ludt phi tuyin phu thudc vdo do ddn

hdi vd dat gdy pha cua dd, cdc kit qud tinh todn trin md hinh dUdc sii dung trong phdn tich sU lan truyen

sdng dp lUc qua chodng khoan vd trong tinh todn dich chuyin cua mdi khoan theo chieu sdu Id khoan.

ABSTRACT

Content of the paper introduces the drilling model using beating energy, this model is based on

the limited description of elements of the drilling in the system of drilling equipment, rock surface posi￾tion contacting with the teeth of the drill bit in the rotating-b^ating process is described by nonlinear rules

depends on the elasticity and fracture phase of the rock, the calculated results on the model used in the

analysis of pressure wave propagation through the drilling and in calculating the movement of the bit drill

along the borehole depth.

1. DAT VAN DE

Thilt bi khoan dd xoay dap dUpc stf dung

phd biln trong ngdnh xdy dpng ham giao thdng

ngam, thuy dien, khai thdc md (xay dUng ham md,

khai thdc qudng vd khodng san trong eae ham md

Id thiin vd dudi long dat), thdm dd dia chat, khoang

san. Ndng lUpng tilu hao trong qua trmh khoan ty

11 thuan vdi eae thdng sd hinh hpe ciia Id khoan,

tuy dudng kinh vd dp sdu eua Id khoan nd min nhd,

nhUng khi khoan sd lUpng ldn eac lo thi tilu thu

nang lUpng Id ddng kl. Thilt bi khoan da xoay dap

thUe hien ddng thdi ba dan dpng trong qud trinh ldm

viec: dan dpng dap, xoay vd dan tiln chodng khoan.

Vdi mdt thilt bi khoan xdc dinh thi hieu suat vd hilu

qua sif dung nang lUdng eua qua trinh khoan dd phu

thupc vao cdc thdng sd lam vile khi bilt trUdc cO

tinh eiia dd. Phat trien hodn thien qud trinh khoan

da ngdy cdng dUpe nhieu nha khoa hpe quan tdm

nghiin cdu, do mUc dp phdc t?p cua phUOng phdp

ddp, md hmh md ta ca he phai chda cac thdng sd vl

dp dich chuyen miii khoan vd ndng lUdng tilu thu.

2.MOTAH£TH6NG

Thilt bi khoan Id nd min sii dung nguyin 1^

dap gidn tiep qua chodng khoan, dau dap va chodng

khoan tdch rdi rilng bilt, dan dpng thilt bi bar^ he

thdng thiiy lUc. Npi dung bdi bdo tdp trung nghiin

cdu lan truyen sdng va ddp trong chodng khoan.

Trln huih 1 Id cae bp phan chinh eiia thilt bi khoan

xoay - ddp￾TAP CHi CO KHl VIET NAM •!• S6 5 (Thane 5 nam 20121