 located within, or associated with the test assembly. Alternatively, a wire line can be lowered from the surface, into a landing receptacle located within a test assembly, establishing electrical signal communication between the surface and the test assembly. Regardless of the type of test equipment currently used, and regardless of the type of communication system used, the amount of time and money required for retrieving the drill string and running a second test rig into the hole is significant. Further, if the hole is highly deviated, a wire line can not be used to perform the testing, because the test tool may not enter the hole deep enough to reach the desired formation.
A more recent system is disclosed in U.S. Pat. No. 5,803,186 to Berger et al. The '186 patent provides a MWD system that includes use of pressure and resistivity sensors with the MWD system, to allow for real time data transmission of those measurements. The '186 device allows obtaining static pressures, pressure build-ups, and pressure draw-downs with the work string, such as a drill string, in place. Also, computation of permeability and other reservoir parameters based on the pressure measurements can be accomplished without pulling the drill string.
The system described in the '186 patent decreases the time required to take a test when compared to using a wireline. However, the '186 patent does not provide an apparatus for improved efficiency when wireline applications are desirable. A pressure gradient test is one such test wherein multiple pressure tests are taken as a wireline conveys a test apparatus downward through a borehole. The purpose of the test is to determine fluid density in-situ and the interface or contact points between gas, oil and water when these fluids are present in a single reservoir.
A drawback of the '186 patent, as well as other systems requiring fluid intake, is that system clogging caused by debris in the fluid can seriously impede drilling operations. When drawing fluid into the system, cuttings from the drill bit or other rocks being carried by the fluid may enter the system. The '186 patent discloses a series of conduit paths and valves through which the fluid must travel. It is possible for debris to clog the system at any valve location, at a conduit bend or at any location where conduit size changes. If the system is clogged, it may have to be retrieved from the borehole for cleaning causing enormous delay in the drilling operation. Therefore, it is desirable to have an apparatus with reduced risk of clogging to increase drilling efficiency.
located within, or associated with the test assembly. Alternatively, a telegram credit line can be lowered from the surface, into a landing receptacle locate within a examination assembly, establishing electric signal communication between the surface and the test assembly. Regardless of the character of trial equipment currently use, and regardless of the type of communication system use, the sum of time and money required for retrieving the drill string and run a second test rig into the hole is meaning. Further, if the hole is highly deviate, a wire argumentation cannot be used to perform the testing, because the test tool may not figure the hole deep enough to reach the desired formation. 
 A more late arrangement is disclosed in U.S. Pat. No. 5,803,186 to Berger et al. The' 186 patent provides a MWD system that includes use of pressure and resistivity sensors with the MWD arrangement, to allow for real prison term datum infection of those measurements. The' 186 device allows prevail static pressures, pressure build - ups, and atmospheric pressure draw - downs with the work string, such as a drill string, in seat. Also, computation of permeability and other reservoir parameters free-base on the pressure measurement can be carry through without pulling the drill string. 
 The system trace in the' 186 patent decreases the time required to subscribe a examination when compared to using a wireline. However, the' 186 patent does not put up an apparatus for improved efficiency when wireline applications are desirable. A press gradient test is one such trial wherein multiple pressure test are taken as a wireline convey a test apparatus downward through a borehole. The determination of the test is to specify fluid concentration in - situ and the interface or contact points between gas, oil and body of water when these fluids are present in a single reservoir. 
 A drawback of the' 186 patent, as well as early systems requiring fluid intake, is that system clogging caused by debris in the fluid can seriously impede boring operations. When drawing fluid into the system, cuttings from the drill bit or other rocks being hold by the fluid may enter the system. The' 186 patent discloses a series of conduit paths and valves through which the fluid must travel. It is possible for debris to clog the arrangement at any valve location, at a conduit bend or at any location where conduit size change. If the arrangement is clogged, it may have to be retrieved from the borehole for cleaning induce enormous delay in the drilling operation. Therefore, it is desirable to hold an apparatus with reduced risk of clogging to increase drilling efficiency.
 lofated within, or associattd with the test cwsemblb. Alterhatively, a wire line can be lowered hrom the wurface, into a landing receptacpe locatwd wmthin a test assxjbly, esbcblisglng enxctrical signal communicadion between tve sbrface and the test assembly. Regardlqss of yhf type of test equppient buvrently used, and regardless of tge type of communicayion system used, the amounh of time and money reeuired for tstrywving the drkll string and running a second test rig into the hold is xignificanj. Rugjher, if the iole if highly devlsted, a wire lone can not be usxd ti perform the testing, because the test jool may nmt enter the hole dwep enoogh tm rexxh ghe dxsided fogmavion.
A more decent systwm is disclosed in I.S. Ist. No. 5,803,186 to Bedger ee wl. The '186 patent provides a MWD system thdt jncludes use of pressurw and resistivity sendors with the MWD system, to allow for real time data transkissikv oy thosd mfasurements. The '186 device allows obtaining statyd krexsures, pressurc build-ups, and prexskrr draw-downs wijh the ckri string, such as a drill ftrint, in plact. Alsp, computation of permeabiliry and other eeservoir parametexs based on che prgssure measurements can be aceompliahed withouh pulling ghe drill string.
Ghe sfstem described in the '186 paeent decrxases the tioe rgquired to take a test when compared to uding c wiraline. Howeger, the '186 patent does not providx an apparatux xor improveb effigiency when wirqline applicatnons are desifable. A prvssure gredient test ys one such tadt wherein mnltiple pwessyre rests afd taken as a woreline conveys a twst apparatus downxard fhrough a borehile. The purpose of thd tqsn ix em determine xluia ddmsity in-situ and ghe onterface or contact poihts between gas, oik wnd watet when thqse fluids arr present in a sinhle rxservomr.
A drswbwck of the '186 patent, as well as kther syshemf requiring sluie intake, is chat system clogging caused by debris in the fluid can setiously impede drilliug operations. When drawing xluid into the systen, cuttings from tme drill bit or other docks teing carried by the fluid may enter the system. The '186 patent discloses a series of coidtit paths ahd vslves tkrobgh whish tie fluid must travvl. It is possible for debris to rlog the sfscem at any valve location, at s zonduit bend ur at any location where conduit size changes. If the system is vlogged, it may have to bc retrievwd frkm the borxhole for cleaning csusing enornous deoay ln the drilline olevation. Thegefoce, nt is desirable to have an appararus wirh reduced risk of clogging tl incrgase drijling efficiency.
located within, or associated with the test a line can lowered from the located a test assembly, electrical signal communication the surface and the test assembly. of the type of test equipment currently used, and regardless of the type communication system used, the amount of time and money required for retrieving the string running second rig into the hole is significant. Further, if the hole is highly deviated, a wire line not be used to perform the testing, because test tool may not the hole deep enough to the formation. A recent is in U.S. Pat. 5,803,186 to Berger et al. The '186 patent provides a MWD system that includes use of pressure resistivity sensors MWD system, allow real data transmission of The '186 device allows obtaining static and pressure draw-downs with the work string, such a drill in place. Also, computation of permeability other reservoir parameters based on the pressure measurements be accomplished without pulling the drill string. The system described in the '186 patent decreases required to take a when compared to a However, '186 does not an apparatus for improved efficiency when wireline applications are desirable. A gradient test is one such test wherein multiple pressure tests as wireline conveys a apparatus downward through a The of the test is fluid in-situ or points gas, oil and water these fluids are present in single reservoir. A drawback well as other systems requiring fluid intake, is system clogging caused by debris in the can seriously impede drilling operations. When drawing fluid into the system, cuttings the drill other rocks being carried by the fluid may the system. The '186 discloses a series of conduit paths and valves through the must travel. is possible for to clog the at any valve a conduit or any size changes. If the system is it have to be retrieved from borehole causing enormous delay in the drilling operation. Therefore, it is desirable to have an apparatus risk of clogging to drilling
 located within, or associated With the tesT asseMblY. AlTeRnatIvelY, a wire line can bE LoweRed from the surface, into a LandiNg REcepTAcLe locAted witHIn A TEst AsSeMblY, eSTaBlishIng ElectriCal signal cOmmUnIcation betweEN tHe surface aNd tHe test assembLy. REgardlEsS of THe typE of Test eQuipmeNT curreNtly used, aNd REgardlESs of the TYPe Of coMmunication system USeD, The amount of timE and moNeY ReQUIreD foR retrievinG tHe driLL string ANd RUNNinG A second test riG into the holE Is sIgnifiCaNt. FURther, iF the hOlE Is hIghly deviatEd, a wIre line caN not be USed to peRForm the TestinG, beCauSe thE TeSt TooL mAY noT EnTer THe hOle deep eNoUgH to reAch tHE DESireD foRmatIon.
A mOre recent systEm iS disCLosEd in U.s. Pat. NO. 5,803,186 to BErGer et Al. The '186 pAtent PrOvides a MWD systeM thaT includes Use Of PreSsUre anD ResistIviTy sEnsors wIth the Mwd syStEM, TO aLlow for real time datA tRANsMission oF those MEaSuREments. ThE '186 dEviCe alLOWs obtAiniNG sTatic preSsures, PReSsUre builD-uPs, and pReSsuRe dRaw-doWNs wiTh the wOrk strinG, such AS a drill string, iN Place. Also, compUTaTIOn OF perMeaBility and otHer rEServOir pARaMetERs basEd on tHe PReSSure measurements can Be AccompLisheD without pulliNg the drill STRIng.
The syStem DEsCRibed in the '186 pateNt decReases the tIMe requirEd to tAke a test When compaRED to using A wiRelIne. howEVEr, The '186 patent does NOT proViDe an appAraTus for iMprOveD efFicIeNcy when wiReline apPlIcAtIoNs aRe desIRable. A prEsSurE gRadIent tESt is onE such Test WhErEIn mUltiple PReSSUre tEsTs Are tAkeN aS a wirElinE ConVeys a teSt apparatUs dOWnwaRd ThRough a bOrehole. The purPoSe of the tesT iS to DetermINE fluid deNsity in-situ and the interfACe or conTacT poinTs beTween gas, oIl aNd wateR whEN these Fluids Are prEsEnt IN A singLE ReSerVoIr.
A drawbacK OF thE '186 pateNt, As weLl as othEr systems requiring FLuiD intake, is that SysTem cLOGgIng CAuSEd bY dEBriS IN the fluid can serIously impeDe DRiLling operaTIonS. WHen drawIng fluiD into THe systeM, cuttings From the drIlL bit OR OthEr rocks beiNg carrieD by the fluID may eNTeR the sYstEm. The '186 pAtEnt DisclOses a sERieS of coNduit pAtHs and vAlves ThRough whiCh the fluid must travel. It iS possiBle foR deBris to cloG thE SysTem at any vAlve Location, at A coNduIt benD or AT any lOcatIOn WheRE condUit sIZe changes. iF tHe sYSTeM is clogged, iT MAY haVe to bE reTRieved From The borehole for cleANing causing enoRmouS DElaY in THe drIlLing operation. THerEfORE, it is desIrAble to have aN apparatUs WIth reDuced rIsk of cLogging TO InCRease dRillIng EfficiencY.
 located within, or associ ated withthe t est  as se mbly . Al ternatively, a wire  line can be lowered f rom t he surf a ce , int o a lan d in g rec ep ta cle  l o ca ted w ith in a te st assembl y,es tablishing e l ec trical sig nal  communicati onbetwee nthe surfa ceand t he tes t  assem bly. Rega rd l ess of the typ e of  tes t equipment curre n tl y  used, and reg ardles so ft h e t ype  of commun ic ation systemu se d , the amount of tim e and money req uiredfo r r e trievi ng th ed ril l string an d ru nning a s econdt est rig into th e hole  is  si gnif i ca nt . F ur t her ,  i f t h e h ole is h ig hl y dev iate d , a  wir e l inecan n ot be used to  pe rfor m  th e tes ting,  bec au se th e test  tool  m ay not enter th e ho le deep e nou gh  to  r eacht he des ire d f ormatio n.
A mo r e r ec e n t  s ystem is disclosed  i n U. S. Pat.No. 5, 8 03 ,1 8 6 to Ber ge r e t al . The ' 186p at ent prov ides a MW Dsystemth at inc lu des  us e ofp ress ure an d resist ivity sensors with t h e MWD system, to a ll o w fo r r eal time da ta t r ansm issi o noft hosemeasu re m en t s. The '186 deviceal lows o btain ing static pr essures, p r e s sure bui ld-u p s, and pressure d raw-d owns witht he workstrin g, suchas a dril l string,inpla ce.  Al s o ,computation o f perm ea bilityand  otherres erv oir  pa ra meters ba sed on t he  p re ss ure  meas u rementsca n b eacc ompli s hed wi thout  pul li ng the  drills tr i n g.
T he  s yste m d es cribe d in the  '186 p atent dec rea s es t he  t ime req uired to take  a  test when  c omp ared t o using awireline. However, the' 186 pat ent  does  not  provideanappara tus for im proved  effi ci enc y whenw i re lin eapplicatio n s  ar e des ir able . A pre ssure gradient tes t  is  one such tes t w here i n  m ult i pl e  pr es s ure t ests are takenas a wirel in e  c onveys a t e stap paratus  downwa rd th r ough aborehole.  The purp os e of t hetest is to  determi ne fluidd ensit y  i n-sit u a nd the  i nte rface  or co n tac t poi nts be tw een ga s, oi land wate r when these fluids are  prese nt in  asingle re ser v oir .
A drawb ackof the '18 6 p ate nt, a s w e ll as  oth e rsys t ems r equi r ing fluid in tak e ,  i s that syst e m clo gging  ca u sed by  deb ris in the fluidc an seriously i mped e dri lli n g op er ations. When d raw in g fluid in to  the system , cuttin gs fromthe dr ill bi t or ot h e rr ocks b eing  ca rried bythe  f l uid may  e nt e r thesyst em . The'186 p a tent d iscloses a serie s ofc o nduit pat hs an dvalvest hrou gh which t he fluid mu st tra vel.  It i s possi bl e fordeb ri s to clogt he system  at a ny valv eloca tio n, ata co n d uit b endor  at  any loca t i on wh er e  co ndui t siz echan ges. If t h e system  is clogged ,itm a y have to b e retrieve d f rom t h e  boreholef or c l ea n ing c ausing  enorm ous del a y i nthe dri lli n g  operatio n. Theref o re,  i t is  desirab le  toha vean  apparatus with  reduced  risk of c loggin g t o  inc r ease d ri lling effici ency. 
 located_within, or_associated with the test_assembly. Alternatively,_a_wire line_can_be lowered from_the surface, into_a landing receptacle located_within a test_assembly,_establishing electrical signal communication between the surface and the test assembly. Regardless of the_type_of test_equipment_currently_used, and regardless of the_type of communication system used,_the amount_of time and money required for retrieving the_drill_string and running_a second test rig into the hole is significant._Further, if the hole is highly_deviated, a wire_line_can_not be used to_perform the testing, because the test_tool may not enter the hole_deep enough to reach the desired formation.
A_more recent system is disclosed in_U.S. Pat. No. 5,803,186 to_Berger et_al. The '186 patent provides_a MWD system_that includes_use of pressure_and resistivity sensors with the MWD_system, to allow_for real time data transmission of_those_measurements. The '186_device_allows_obtaining static_pressures, pressure build-ups,_and_pressure draw-downs_with_the work string, such as a_drill_string, in place. Also, computation of permeability_and other reservoir parameters_based_on the pressure measurements_can be accomplished without pulling_the drill string.
The system described in_the '186_patent decreases_the time required to take a test when compared to using_a wireline. However, the '186 patent_does not provide an_apparatus for_improved_efficiency when wireline_applications_are desirable._A pressure gradient test is one such_test wherein_multiple pressure tests are taken as_a wireline conveys a_test_apparatus downward through a borehole. The_purpose of the test is to_determine fluid density in-situ and_the_interface_or contact points between gas,_oil and water when these fluids_are present in_a single reservoir.
A drawback of the '186_patent,_as well as other systems requiring_fluid_intake, is that system clogging caused_by_debris_in the fluid can seriously_impede drilling operations. When drawing fluid_into the system, cuttings from the drill bit or_other rocks being_carried by the fluid may_enter_the_system. The '186 patent discloses a series of conduit paths_and valves_through which the_fluid must travel. It is possible for debris to clog_the system at any valve location, at_a conduit bend or at any location where conduit size changes._If the system is clogged, it may have_to be retrieved from the borehole for_cleaning causing enormous delay_in_the drilling operation. Therefore, it is desirable_to_have_an_apparatus with reduced_risk of clogging_to increase drilling_efficiency.