Execution Version
FIRST SUPPLEMENTAL INDENTURE PARKER DRILLING COMPANY, the Guarantors named
herein and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.,
 
as Trustee
9 1/8% Senior Notes due 2018
June 21, 2013
HOU03:1332208

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TABLE OF CONTENTS
ARTICLE ONE
GUARANTEE...................................................................................................1
SECTION 1.01 Guarantee.
....................................................................................................1
ARTICLE TWO MISCELLANEOUS
PROVISIONS.................................................................2
SECTION 2.01 Integral
Part..................................................................................................2
SECTION 2.02
Definitions....................................................................................................2
SECTION 2.03 Adoption, Ratification and Confirmation.
...................................................2
SECTION 2.04 The Trustee.
.................................................................................................2
SECTION 2.05
Counterparts.................................................................................................2
SECTION 2.06 Governing Law.
...........................................................................................2
SECTION 2.07 Waiver of Jury
Trial......................................................................................3
 

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THIS FIRST SUPPLEMENTAL INDENTURE, dated as of June 21, 2013 (this “Supplemental
Indenture”), is by and among Parker Drilling Company, a Delaware corporation
(the “Company”), ITS Rental and Sales, Inc., a Texas corporation and a
wholly-owned Subsidiary of the Company (the “New Guarantor”), each existing
Guarantor (as defined in the Indenture referred to below) and The Bank of New
York Mellon Trust Company, N.A., a national banking association, as trustee (in
such capacity, the “Trustee”).
W I T N E S S E T H :
WHEREAS, the Company, the existing Guarantors and the Trustee have heretofore
executed and delivered an Indenture, dated as of March 22, 2010 (the
“Indenture”), providing for, among other things, (i) the issuance by the Company
of the Company’s 9 1/8% Senior Notes due 2018 (the “Senior Notes”) and (ii)
Guarantees of the Company’s payment Obligations under the Indenture and the
Senior Notes by certain of the Company’s Subsidiaries;
WHEREAS, Section 11.05 of the Indenture requires each Restricted Subsidiary of
the Company that is not already a Guarantor, in certain circumstances, to
execute and deliver to the Trustee a supplemental indenture pursuant to which
such Restricted Subsidiary shall provide a Subsidiary Guarantee and become a
Guarantor under the Indenture;
WHEREAS, the Company, pursuant to the terms and provisions of the Indenture,
proposes in and by this Supplemental Indenture to supplement and amend the
Indenture insofar as it will apply only to the Senior Notes in certain respects;
and
WHEREAS, the Company has provided to the Trustee such documents as are required
to be provided to the Trustee under Sections 9.01, 9.06, 11.05 and 12.05 of the
Indenture, and pursuant to Section 9.01 of the Indenture, the Trustee, the
Company, the existing Guarantors, and the New Guarantor are authorized to
execute and deliver this Supplemental Indenture;
NOW, THEREFORE:
To comply with the terms and provisions of the Indenture and in consideration of
the premises provided for herein, the New Guarantor, the Company, the existing
Guarantors and the Trustee mutually covenant and agree for the benefit of each
other and for the equal and proportionate benefit of all Holders of the Senior
Notes as follows:
ARTICLE ONE
GUARANTEE
SECTION 1.01 Guarantee.
The New Guarantor hereby agrees by its execution and delivery of this
Supplemental Indenture, with respect to the Senior Notes, to be a Guarantor
under the Indenture and to be bound by all of the provisions of the Indenture
applicable to a Guarantor thereunder to the extent provided for in Article XI of
the Indenture.

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ARTICLE TWO
MISCELLANEOUS PROVISIONS
SECTION 2.01 Integral Part.
This Supplemental Indenture constitutes an integral part of the Indenture.
SECTION 2.02 Definitions.
For all purposes of this Supplemental Indenture:
(a) capitalized terms used herein without definition shall have the meanings
specified in the Indenture; and
(b) the terms “herein”, “hereof”, “hereunder” and other words of similar import
refer to this Supplemental Indenture.

SECTION 2.03 Adoption, Ratification and Confirmation.
The Indenture, as supplemented and amended by this Supplemental Indenture, is in
all respects hereby adopted, ratified and confirmed.
SECTION 2.04 The Trustee.
The Trustee shall not be responsible in any manner whatsoever for or in respect
of the validity or sufficiency of this Supplemental Indenture, the Subsidiary
Guarantee of the New Guarantor or for or in respect of the recitals contained
herein, all of which recitals are made solely by the Company and the Guarantors
party hereto (including the New Guarantor). All of the provisions contained in
the Indenture in respect of the rights, privileges, immunities, powers, and
duties of the Trustee shall be applicable in respect of this Supplemental
Indenture as fully and with like force and effect as though fully set forth in
full herein.
SECTION 2.05 Counterparts.
This Supplemental Indenture may be executed in any number of counterparts, each
of which when so executed shall be deemed an original, and all such counterparts
shall together constitute but one and the same instrument. Delivery of an
executed counterpart of a signature page to this Supplemental Indenture by
facsimile or electronic delivery (i.e., .pdf or .tif) shall be effective as
delivery of a manually executed counterpart of this Supplemental Indenture.
SECTION 2.06 Governing Law.
THE INTERNAL LAW OF STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS
SUPPLEMENTAL INDENTURE.

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SECTION 2.07 Waiver of Jury Trial.
EACH OF THE COMPANY, THE NEW GUARANTOR, THE EXISTING GUARANTORS AND THE TRUSTEE
HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT
MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY
ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS SUPPLEMENTAL INDENTURE.
[Signature Pages Follow]
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